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【单选题】
水质采样时,通常分析有机物的样品使用简易的( )材质采样瓶。A.
聚四氟乙烯
B.
聚乙烯塑料
C.
玻璃
D.
金属
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举一反三
【单选题】My sister tried her best to___the life in Italy,but failed to make any ___.
A.
adjust to;senses
B.
adapt to;trouble
C.
adapt to;effort
D.
adjust to;difference
【单选题】Last year my sister tried to lose weight, but ______ putting weight back on.
A.
cut up
B.
looked up
C.
ended up
D.
make up
【单选题】My sister tried her best to ____the life in Italy, but failed to make
A.
y ____.
B.
adjust to; senses
C.
adapt to ; trouble
D.
adapt to; effort
E.
adjust to; difference
【单选题】My sister tried her best to ______ the life in Italy, but failed to make any ____________.
A.
ajust to ; senses
B.
adapt to ; trouble
C.
adapt to ; effort
D.
adjust to ; difference
【简答题】假定下表是需求函数Qd=1200-200P在一定价格范围内的需求表。 试求:(1)价格为2~4元的需求的价格弧弹性。 (2)根据给出的需求函数求出P=2元时的需求的价格点弹性。
【单选题】Sitting opposite my sister and me in the subway who walked alongside us and tried to punch us on Fifth Avenue.
A.
were they the same men
B.
they were the same men
C.
were the same men
D.
the same men were
【单选题】袋中装有黑、白两种颜色的球各三个，现从中取出两个球，设事件P：取出的都是黑球；事件Q：取出的都是白球；事件R：取出的球中至少有一个黑球．则下列结论正确的是（ ）
A.
P与R互斥
B.
Q与R互斥
C.
任何两个都互斥
D.
任何两个均不互斥
【单选题】Sitting opposite my sister and me in the subway ____ who walked alongside us and tried to punch us on the Fifth Avenue.
A.
were they the same men
B.
they were the same men
C.
were the same men
D.
the same men were
【单选题】last year , my sister tried to lose weight (减肥), but ______ putting weight back on.
A.
cut up
B.
looked up
C.
ended up
D.
made up
【单选题】(2013·吉林长春三校高三调研)Days later, I tried to get my sister to tell me what was going on, but she ________ say anything.
A.
mustn't
B.
shouldn't
C.
wouldn't
D.
mightn't
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