According to the passage, we can conclude that in some areas if farmers who grow grapes light fires in the early morning, that is because the farmers want to______.
A. drive away warm air
B. prevent cold air from coming to harm their plants
C. cause more wind
D. stop warm air running away
The author implies that there is cause for concern if consumers with limited incomes buy organic foods instead of conventionally grown foods because ______.
A. organic foods can be more expensive but are often no better than conventionally grown foods
B. many organic foods are actually less nutritious than similar conventionally grown foods
C. conventionally grown foods are more readily available than organic foods
D. too many farmers will stop using conventional methods to grow food crops
Go and see upstairs.
A. whether Mike is up to
B. what Mike is up to
C. what Mike does
D. what is Mike doing
—1 promise that his daughter______ get a nice present on her birthday.—Will it be a big surprise to her
A. should
B. must
C. would
D. shall
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