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【单选题】
If something throttles another thing, does it (a) create problems that make it difficult to continue with the second thing, or (b) destroy the second thing completely?A.
create problems that make it difficult to continue with the second thing
B.
destroy the second thing completely?
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举一反三
【单选题】Which of the following greatly influences the stability of the resultant hybrid?
A.
GC content of the probe
B.
AT content of the probe
C.
The molecular weight of the probe
D.
The size of the target gene
【单选题】You know that the appearance of the ()contributes greatly to the sale of the consumer packing.
A.
pack
B.
packed
C.
packing, package
【单选题】汽车带挂车后省油是因为
A.
提高了汽车的质量利用系数，提高了发动机的负荷率
B.
提高了汽车的质量利用系数，降低了发动机的负荷率
C.
降低了汽车的质量利用系数，提高了发动机的负荷率
D.
降低了汽车的质量利用系数，降低了发动机的负荷率
【单选题】The reporter said that the survivors greatly the firefighters' rescue in the big fire.
A.
charged
B.
appreciated
C.
harmed
D.
solved
【简答题】使胰蛋白酶原活化最重要的物质是（ ）
【单选题】London has clearly______ the system of local government devised to meet the greatly different physical and social conditions of the last century.
A.
widened
B.
constituted
C.
displayed
D.
outgrown
【简答题】The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water.'
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