大全987-13

A majority of the international journalists surveyed view nuclear power stations as unsafe at present but that they will, or could, be made sufficiently safe in the future.

(A) that they will, or could,

(B) that they would, or could,

(C) they will be or could

(D) think that they will be or could（D）

(E) think the power stations would or could

答案是D,我选了E

因为后面用了could,那么前面是不是也应该用过去时态呢?所以我选了would.

为什么will be和 could be平行啊,想也想不通啊~

  A wildlife expert predicts that the reintroduction of the caribou into northern Minnesota would fail if the density of the timber wolf population in that region is more numerous than one wolf for every 39 square miles.

(A) would fail if the density of the timber wolf population in that region is more numerous than

(B) would fail provided the density of the timber wolf population in that region is more than

(C) should fail if the timber wolf density in that region was greater than

(D) will fail if the density of the timber wolf population in that region is greater than（D）

(E) will fail if the timber wolf density in that region were more numerous than

同样这题就是选D

前面谓语是现在时的predicts,后面从句中用的是will

上面那题谓语也是现在时think,后面跟的却是will be and could ,这是为什么呢??

哪位好心人帮忙解释一下啊,我实在搞不明白!

E，宾语从句不能没有that。could表示推测，would表示不大可能。这里would不合适。第二题的主要问题在于numerous要修饰可数

真是好人啊~~

那就是说could是可以用在现在时态的句子中的咯??