单选题 The polytene chromosomes found in the salivary( )cells are among the largest chromosomes known today.

A、 gland
B、 appetite
C、 glance
D、 abuse
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A、collapse
B、deficit
C、accessible
D、integrate

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A、collapse
B、fluctuate
C、linger
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A、untangle
B、expel
C、collapse
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单选题 The services should be easy to invoke, function well, have good errorreporting, and generally be able to()with other services.

A、spectacular
B、collapse
C、grind
D、integrate

单选题 But it is a particular concern among children on insulin because their blood sugar levels tend to()more widely, researchers said.

A、fluctuate
B、expel
C、collapse
D、fluctuate

单选题 But due to centuries of exposure to the elements, the bones and bunks-and much of the caves themselves-had()by the
Time the team entered the chambers.

A、linger
B、access
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单选题 Subsidising fishermen means they continue fishing even after stocks begin to plummet, because a substantial share of their income is now coming from the() rather than from profits on fishing.

A、expel
B、integrate
C、subsidy
D、collapse

单选题 The concert follows a similar pattern: I can't work out whether it's a date; other people turn up dispelling any()
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A、access
B、lingering
C、spectacular
D、collapse