单选题A friendship may be deep, lasting, or ______, casual and situational.

单选题For ten years the problem about the water has not been solved; we came to think that it has been a______problem in this are

单选题Despite all the reports of physicians and health authorities, some individuals find that cigarette smoking is ______.

单选题It was because of your immediate help______ I managed to pass the test.

单选题 中国的官方语言普通话(Mandarin)在美国的学校中突然热起来。由于中国经济在21世纪的快速发展，美国的公立和私立学校纷纷在外语教学中加入汉语这一科目，或将已有的汉语教学项目进行扩展。据统计，在美国的学校中，有5万名孩子在学习汉语。推动汉语项目的发展不是没有遇到困难。由于缺乏受过专业训练、持有证书的教师，一些学校很难加入汉语教学的竞争。当学校聘用教师时，它们通常直接从中国招聘，这种方式为文化冲突埋下了隐患。

单选题Although most dreams apparently happen ______, dream activity may be provoked by external influences.

单选题________ the window, I saw a beautiful car in front of the building.

单选题Mary Arming (1799--1847) was a British fossil hunter who began finding (21) as a child, and soon supported herself and her very (22) family by finding and selling fossils. Very (23) is known about her life, but her father was a cabinet maker and he also (24) local fossils. Mary (25) on the southern coast of England, in a town called Lyme Regis. Its famous (26) by the sea contain (27) fossil layers that (28) from the Triassic, Jurassic and Cretaceous periods (the (29) of the dinosaurs, other bizarre reptiles, large insects, sea creatures, (30) mammals, and (31) life forms). Mary Anning (32) and prepared the first fossilized plesiosaur (an ocean-dwelling reptile) and the first Ichthyosaurus (an ocean-dwelling reptile that (33) like a dolphin). She found many other important fossils, including Pterodactylus (a flying reptile), sharks (and other fish), and so on. (34) with her brother Joseph, Mary supplied prepared fossil specimens to (35) museums, scientists, and private collections.

单选题In a time of social reform, people"s state of mind tends to keep ______ with the rapid changes of society.

单选题I've always longed for the time ______ I should be able to be independent.

单选题The child was so Uingenuous/U that even when she knocked the television off its stand so that it was irreparably damaged, her parents thought her to be charming.

单选题The real power of words consists in their ______.

单选题Joan: Look, I'm sorry to bother you about this, but this wall between our rooms is not very soundproofing and I'm doing my homework. Steven: ______

单选题As we recently discovered，there is a Stepmother’s Day，though it is not on any official holiday calendar.So，it would be safe to assume that there is a similar day for stepdads，too.Right? Well，it depend

单选题We suggested ______ in hotels but the children were anxious ______ out． A．sleeping; to camp B．sleeping; camping C．to sleep; to camp D．to sleep; camping

单选题Woman: I can't believe Karen is late for such an important occasion as a job interview. I reminded her time and again yesterday. Man: You should have known her better by now. Everything you tell her goes in one ear and out the other. Question: What does the man imply? A. Karen is very forgetful. B. He knows Karen better now. C. Karen is sure to pass the interview. D. The woman should have reminded Karen earlier.

单选题______, wild dogs have very keen(灵敏的)senses of sight, hearing, and smell.

单选题It was essential that the application forms ______ back before the deadline.

单选题You will soon ______ this climate and then the changes in temperature will not affect you.

单选题More has been learned since 1945 about the chemical changes in the body than in all human history before ______ time.