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Recently I stood in front of my class, observing an all-too-familiar scene. Most of my students were secretly—or so they thought—looking at their smart phones under their desks.As I called their attention, students" heads slowly lifted, their eyes reluctantly glancing forward. I then cheerfully explained that their next project would practice a skill they all desperately needed: holding a conversation. Several students looked confused. Others moved uneasily in their seats, waiting for me to stop watching the class so they could return to their phones.Even with plenty of practice, most kids were unable to converse effectively. They looked down at their hands. Some even reached for their phone—the last thing they should be doing.As I watched my class struggle, I came to realize that conversational competence might be the single-most overlooked skill we fail to teach students. Kids spend hours each day engaging with ideas and one another through screens—but rarely do they have an opportunity to truly practice their interpersonal communication skills. Admittedly, teenage awkwardness and nerves play a role in difficult conversations. But students, reliance on screens for communication is affecting their engagement in real-time talk.It might sound like a funny question, but we need to ask ourselves: Is there any 21st century skill more important than being able to hold a confident, coherent (连贯的) conversation When students apply for colleges and jobs, they won"t conduct interviews through their smart phones. When they negotiate pay raises and discuss projects with employers, they should demonstrate a thoughtful presence and the ability to think on their feet.But in our rash to meet 21st-century demands, we aren"t asking students to think and communicate in real time. Online discussion boards and Twitter are useful tools for exchanging ideas. But they often encourage a "read, reflect, forget about it" response that doesn"t truly engage students in extended critical thinking or conversation.As Sherry Turkle writes, "We are tempted to think that our little "sips" of online connection add up to a big gulp (大口) of real conversation. But they don"t." How did the conversation project go

A. It was quite successful.
B. It went just as expected.
C. It was far from satisfactory.
D. It brought about mixed results.

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My problem with food began when I graduated from high school. About that time, I began eating out a lot. There were two fast-food restaurants near the place where I worked, so I ate lunch at one or the other almost every day. I found it much easier to go to a fast-food restaurant than to prepare my own lunch.When I moved away from home my eating habits got worse. I didn"t know how to cook, and I didn"t have much money; but my favorite fast-food restaurant was just two blocks away. Eating there seemed like the easiest and cheapest option. In addition to eating the wrong kind of food, I ate way too much. I wasn"t satisfied with a standard fast-food meal. I ordered more French fries, a larger soft drink, and an extra hamburger—whatever I could afford—in the largest size available.The turning point came when I was in my late 20"s. I started thinking more seriously about my health. I was overweight. I felt sluggish all the time, and I lacked self-confidence. I knew that I needed to make changes. So I began to try to get my eating under control.I took a gradual approach. First, I reduced the amount of food I ate. 1 would tell myself, "This isn"t my last meal; I can always eat again." At times I literally had to walk away from the dinner table. But I felt good afterward, as if I had won a victory.Besides I had to give up something completely. For example, I eliminated soft drinks and drank only water. That was difficult. I loved soft drinks, and I hated water. After I drank a glass of water, I would take a small cup of juice, which put some flavor in my mouth. After a while, water itself became more appealing.Now I still do go out to eat occasionally. But when I do, I control how much I eat. If the portion I"m served is too big, I ask for a take-out box. Then I put half of the meal in the box before I start eating. That way, I consume a reasonable portion instead of eating. The author began to eat out a lot ______.

A. when he started to work
B. when he moved out from home
C. because fast food was his favorite
D. because he disliked home-made food

The investigators have tried to identify the cause of the air crash one way or ______, but in vain.

A. other
B. another
C. the other
D. else

Ted ______ to dip into his pocket for his son"s college tuition fees.

A. forced
B. was forcing
C. was forced
D. had been forced

My problem with food began when I graduated from high school. About that time, I began eating out a lot. There were two fast-food restaurants near the place where I worked, so I ate lunch at one or the other almost every day. I found it much easier to go to a fast-food restaurant than to prepare my own lunch.When I moved away from home my eating habits got worse. I didn"t know how to cook, and I didn"t have much money; but my favorite fast-food restaurant was just two blocks away. Eating there seemed like the easiest and cheapest option. In addition to eating the wrong kind of food, I ate way too much. I wasn"t satisfied with a standard fast-food meal. I ordered more French fries, a larger soft drink, and an extra hamburger—whatever I could afford—in the largest size available.The turning point came when I was in my late 20"s. I started thinking more seriously about my health. I was overweight. I felt sluggish all the time, and I lacked self-confidence. I knew that I needed to make changes. So I began to try to get my eating under control.I took a gradual approach. First, I reduced the amount of food I ate. 1 would tell myself, "This isn"t my last meal; I can always eat again." At times I literally had to walk away from the dinner table. But I felt good afterward, as if I had won a victory.Besides I had to give up something completely. For example, I eliminated soft drinks and drank only water. That was difficult. I loved soft drinks, and I hated water. After I drank a glass of water, I would take a small cup of juice, which put some flavor in my mouth. After a while, water itself became more appealing.Now I still do go out to eat occasionally. But when I do, I control how much I eat. If the portion I"m served is too big, I ask for a take-out box. Then I put half of the meal in the box before I start eating. That way, I consume a reasonable portion instead of eating. The author ate in fast-food restaurants to ______.

A. solve his problem with food
B. save time and money
C. satisfy his demand for food variety
D. change his eating habits

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