____ resource-rich nations of the Third World would combine to set high commodity prices. [A] which [B] what [C] that [D] in that 4. It is not yet known ____ computers will one day have vision as good as human vision. [A] whether [B] if [C] that [D] how 5. Such attitudes amount to a belief ___ leisure can and should be put to good use. [A] which [B] if [C] whether [D] that 6. The reason for making a decision is ___ a problem exists, goals are wrong, or something is standing in the way of accomplishing them. [A] why [B] because [C] where [D] that 7. ___ developed was a music readily taking on various forms and capable of an almost limitless range of expression. [A] What [B] Whether [C] That [D] Which 8. Very few people understood this contract, ___ was very obscure. [A] the language [B] the language of which [C] all it said [D] which it had said 9. Often music was played out of doors, ___ nature provided the environment. [A] which [B] that [C] in which [D] where 10. Many of us visited the industrial exhibition, ____, to our disappointment, we saw very few high-tech products. [A] where [B] which [C] as [D] that
Key: 1. A that 引导宾语从句 2. A that 引导同位语从句 3. C that 引导同位语从句 4. A it为形式主语,whether引导真正的主语从句 5. D that 引导同位语从句 6. D that 引导表语从句 7. A what 引导主语从句,并在主语从句中做主语 8. B the language of which引导非限定性定语从句,并在定语从句中做主语 9. D where引导非限定性定语从句,并在定语从句中作地点状语 10. A where引导非限定性定语从句,并在定语从句中作地点状语
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