单选题When we have difficulty( )obtaining desired objects or reaching desired goals we experience negative emotions such as grief and anger.
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单选题The author refers to the Venus primarily in order to ______.
单选题The team leader of mountain climbers marked out ______. A. that seemed to be the best route B. what seemed to he the best route C. which seemed to he the best route D. something that to be the best route
单选题Those close to him are ______ that he hopes to stay on till the end of his term.
单选题The' Oxford English Dictionary' is the best______on English words.
单选题The travelers ______ 300 miles a day by car when they were in Africa.
单选题Woman: Thanks a lot! This scarf will be perfect with my blue jacket. Man: Made a good choice, did I? Question: What does the man mean?
单选题Figures showed that security screeners were ______ dangerous items.
单选题_______more attention, the young trees could have grown much better.
单选题Why is there a slow pace of technological change in American firms?
单选题His inability to learn foreign languages was a(n) obstacle to his career. A. barrier B. excess C. carrier D. impulse
单选题The area is ______ with trails, some as wide as boulevards, that have been cut and maintained by elephants. A. blackmailed B. latticed C. isolated D. galloped
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单选题If you don't give ______smoking, you'll never get better.
单选题It is during his spare time ________ David has been working on building his motor bike.
单选题Having weighed up all the factors the department finally agreed to receive all the ______ to the committee.
单选题Smog-choked Southern California (demands) them. It's a Car for people who never want to go to (a) gas station again. But the fact is, for all the talk, selling (gas-less) machines has been a (hard-sell).
单选题The slogan "scientific truth is a matter of social authority" has become dogma to many academic interest groups who have been ______ themselves to substitute their authority for that of the practicing scientists.
单选题The Labor Party's electoral strategy, based on an ______ with other smaller parties, has proved successful.