阅读下面短文,掌握其大意,然后从36-55各题所给的[A]、[B]、[C]、[D]四个选项中选出最佳答案。 From Monday until Friday most people are busy working or studying, but in the evenings and on weekends they are free and enjoy themselves. Some watch TV or go to the movies (电影院); (36) take part in sports. It depends on individual (个人的) (37) . There are many different ways to (38) our spare time. Almost everyone has (39) kind of hobby (爱好). It may be something from collecting stamps (40) making model airplanes. Some hobbies are very (41) ; others don’t (42) at all. Some collections are (43) a lot of money; others are (44) only — for their owners. I know a man who has a (45) collection worth several thousand dollars. A short time ago he bought a rare (稀有的) fifty cent piece worth 250! He was very happy about his collection and thought the (46) was reasonable. (47) , my youngest brother (48) match boxes. He has almost 600 of them but I doubt if they are worth any money. (49) , for my brother they are extremely (特别地) (50) . Nothing makes him (51) than to find a new match box for his collection. That’s (52) a hobby means, I think. It is something we like to do in our spare time (53) for the fun of it. The value in dollars is not important, (54) the pleasure it gives us (55)
A. some
B. any
C. certain
D. every
AgSCN与Ag2CrO4的溶度积常数几乎相同(1×10-12),它们的溶解度S间的大小比较正确的是()。
A. SAgSCN=SAg2CrO4
B. SAgSCN>SAg2CrO4
C. SAgSCN<SAg2CrO4
D. 2SAgSCN=SAg2CrO4
B From the 440 radio channels available on Osaka Yusen Broadcasting, Japan’s largest cable- radio network, subscribers (订户) can tune into a channel featuring (以……为特色) 24 hours of croaking frogs, or one that consists of the sound of trains polling in and out of stations. As well as the sounds of birds or percolating (过滤) coffee, Osaka Yusen offers nearly 100 channels of announcer-free jazz, rock, classical music, Second World War military marches, and folk music from all over the world. Easton and Abba each have entire channels to themselves, al- though the repeating rate must be almost as high as that of an in-flight music channel. For those in search of more intellectual (智力的) background sounds for their dinner par- ties, there is always the lesson channel or a range of talks on spiritual development. But anyone tired of all the above should adjust their sets to "drowsing (瞌睡) channels" and tune into the sheep-counting station, for example, which features a mature male voice slowly counting from one to a thousand. For busy people wishing to calm down after an awful day at work, there is a channel of slow music, and another carrying only the sound of a mother’s heartbeat. According to the company, "Babies listen to this noise before they are born. It’s a natural relaxant." Why busy people prefer a channel carrying only the sound of a mother’s heartbeat
A. Because they want to listen to something special.
Because they Wish to honor their mothers.
C. Because they just want to relax.
D. Because they are tired of music channels.
C Any mistake made in the printing of a stamp raises its value to stamp collectors. A mistake on one inexpensive postage stamp has made the stamp worth a million and a half times its original value. The mistake was made more than a hundred years ago in the British colony of Mauritius, a small island in the Indian Ocean. In 1847 an order for stamps was sent to a London printer. As a result, Mauritius was to become the fourth country in the world to issue stamps. Before the order was filled and delivered, a ball was planned at Mauritius’ Government House, and stamps were needed to send out the invitations. A local printer was told to copy the design for the stamps. He accidentally inscribed (记下) the words "Post Office" instead of "Post Paid" on the several hundred stamps that he printed. Today there are only twenty-six of these misprinted stamps left: fourteen One Penny Orange— Reds and twelve Two Penny Blues. Because of the Two Penny Blue’s rareness and age, collectors have paid as much as $16,800 for it. A stamp with any mistake in the printing can raise its value if ______.
A. most stamp collectors like the mistake made in printing
B. the mistake was made more than a hundred years ago
C. the mistake was made in the British colony of Mauritius
D. the stamp became rare and with a long history