题目内容

The experts'study on the problem of erosion can
[A] lead to its eventual solution
[B] provide an effective way to slow it down
[C] help to prevent it from worsening
[D] warn people whose homes are in danger

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[A] On
[B] In
[C] To
[D] At

[A] for
[B] to
[C] in
[D] on

[A] on
[B] about
[C] in
[D] at

[A] numbers
[B] amounts
[C] number
[D] amount