348. [答案] B. held . . . up.

　[注释]hold up sb. 拦劫。hold up, hold on, hold out 的用法请参阅III. 82,83注释.

347. [答案] A. scratch.

[注释]start from scratch (=from the beginning, from nothing) 从头开始，白手起家;John brought the radio from scratch. (=John bought the parts and put them together himself. )

346. [答案] D. recovered.

[注释]recover from 从. . . . . . 恢复过来

345. [答案] D. class.

[注释]be in the same class 水平相同。此句中class,意为“(高低、优劣的)等级;种类”。

344. [答案]C. choice.

　[注释]have no choice but 除了. . . 没有别的选择;只能. . . ：I have no choice but to obey. (我只能服从)。

343. [答案]C. isolated[注释]isolated 孤立的。Deserted被遗弃的;空无一人的;abandoned丢弃的，如;abandoned cars(因报废而丢弃的汽车)。Dispose of sth. 处理掉某物：He disposed of his old car . (他把旧的汽车处理掉了。)意为卖掉或扔掉等。

342. [答案]D. burst[注释] burst vt. /vi. 涨破，涨裂。Burst one's clothes(撑破衣服)。

341. [答案]C. inferior.

[注释]inferior 比较差的;humble谦卑的，恭顺的，低下的;awkward 尴尬的，别扭的， 笨手笨脚的;不好用的;minor细小的：1)This cloth is inferior to that one . (这块布比那块质量差)2)She feels inferior to her elder sister . (她感到比姐姐差的多。)3)He is of humble birth. (她出身低微。)4)He is very humble towards his superiors. ( 他对上司低三下四。)5)he felt awkward and uncomfortable. (他感到尴尬不自在)6)He was an awkward carpenter. (他是个笨手笨脚的木匠)7)This is a very awkward question. We must ask that of Hery. (这个问题不好对付，我们必须去问问亨利)

340. [答案]C. influence.

[注释]have a influence on 对. . . 有影响;

339. [答案]B. sensible[注释]sensible 通情达理的;sensitive敏感的;obedient顺从的;jealous 妒忌的，猜疑的，警惕的;