a级
11. at that time, we
did not fully grasp the significance of what had happened.
a.
give b. attach c.
lose d. understand
【解析】grasp抓住。
give给;attach 附加;lose失去;understand理解。
12. (1) for some obscure
reason, the simple game is becoming very popular.
a. unclear b.
obvious c. major d. minor
【解析】obscure 不清楚的,晦涩的。
unclear不清楚的;obvious明显的; major主要的;minor次要的。
13. he asserted that nuclear power was
a safe and non-polluting energy source.
a. maintained b. recommended c. considered
d. acknowledged
【解析】assert声言,提出主张。
maintain主张;recommend推荐;consider考虑;acknowledged承认