提示: Jim问Paul最近去了哪儿, Paul说他去法国度假了. Jin接着询问了度假情况,Paul说他已经去过法国两次,并且认为他的法语进步很快。
(Jim=J;Pau=P)
J: ___51___
P:l&39;ve been to France for my holidays.
J: Did you? ___52____ ?
P:Very exciting. I&39;ve just got back. In fact I came back yesterday.
J: You&39;re lucky. I&39;ve never been abroand.
P:Oh,___53___ .
J: ____54___?
P:I stayed nearly two wecks.
J:Did you speak French all the time?
P:Most of the time___55____.
含有比活度为20Ci/kg的137Cs的放射性固体废物属于()。
A. 低放废物
B. 中放废物
C. 高放废物
D. 极高放废物
The plunger in the fuel injector pump, usually operated by a _____, is driven up and down
A. crankshaft
B. camshaft
C. piston rod
D. rack and pinion
属于县级国家档案馆接收范围的档案,立档单位应当自档案形成之日起满()年即向有关的县级国家档案馆移交
A. 20
B. 30
C. 10
D. 40