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【单选题】
可见分光光度法,采用的是()材质的比色皿。A.
玻璃
B.
石英
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【单选题】In our English class, the English teacher asked us to stand up and introduce__________.
A.
we
B.
us
C.
our
D.
ourselves
【简答题】电子点火系是利用晶体三极管的（）和（）状态来控制点火线圈初级电流接通和断开的。
【单选题】Her interesting face, with a long nose and big eyes, is what makes her _____.
A.
stand by
B.
stand for
C.
stand up
D.
stand out
【单选题】What does the number Yao Ming chose stand for?
A.
two long legs
B.
two long arms
C.
two tall people in love
D.
tow big countries
【简答题】八点半,乐声大起,一位军官宣布,联合国签字代表团到。他们是乘驱逐舰从横滨动身来的。顷刻间,从主甲板大炮后走出一列衣着殊异的人。第一个是中国代表徐永昌将军,他穿着一身洁净的哔叽军服,左胸上两行勋绶,向在场迎接的美官举手还礼后,拾级登梯走至上层甲板上。随后,英国、苏联、澳洲、加拿大、法国、荷兰、新西兰的代表也陆续上来了。这时,记者大忙,上层甲板上成了一个热闹的外交应酬场所。一时间,中国话、英国话、...
【单选题】If the engine _____ for a long period, there will be a danger of frost.
A.
must to stand inoperative
B.
has to stand inoperative
C.
must be stood idle
D.
will stand idle
【单选题】Every Monday morning, all the teachers and students in our school stand at ____ as our national
A.
23. Every Monday morning, all the teachers and students in our school stand at ____ as our national flag is raised. A．attention
B.
attentions
C.
at ease
D.
Attentively
【简答题】We have been practicing for so long and so hard that our team should stand a chance __________ winning the ;
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