死了的植物如何会变成飞动的甲虫呢？我们若能这么追问，一切虚妄的学说都会______。
A．迎刃而解
B．不攻自破
C．烟消云散
D．销声匿迹
参考答案：B
---_______ one and a half months enough for the project to be finished?
---I am afraid not. The professor is ill and only after he recovers ________ go on with it.
A．Is; he can
B．Are; he can
C．Is; can he
D．Are; can he
常见的直接影响工程进度的风险，包括______。
A．政治风险
B．军事风险
C．汇率风险
D．资源风险
