题目内容：
请在第__（64）__处填上正确答案
A．mixture B．link
C．ombination
D．unio
参考答案：
答案解析：
单选题：请在第__（64）__处填上正确答案
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B．link
C．ombination
D．unio
B．link
C．ombination
D．unio
请在第__(65)__处填上正确答案。
请在第__(65)__处填上正确答案。A．roles B．posts C．positions D．parts
Finding a bargain on the Internet was getting easier partly
Finding a bargain on the Internet was getting easier partly because_____A．there
Dehydration may occur if there is a shortage of water______
Dehydration may occur if there is a shortage of water______A．0unces of Water Nee
Signing the FCTC is only the first step toward____
Signing the FCTC is only the first step toward____A．have ratified it B．approving
Plants, animals and humans are all effective in_______
Plants, animals and humans are all effective in_______A．our share of resources B