Dr. Leakey studied chimpanzees in Africa because（）
A. he thought that they were the best friends of humans'
B. he believed that prehistoric people might live a life similar to the life chimps lived now
C. he loved the animals
D. the chimpanzees were very shy
We can infer from the passage that（）
A. Dr. Leakey studied chimps because he began to love the animals
B. after she met Dr. Leakey, Jane began to study the way that early people lived while observing chimpanzees
C. the country was very difficult to travel through
D. Jane worked with Dr. Leakey because she loved him
男+25岁，病毒性呼吸道感染后4天发现肉眼血尿，无皮疹与水肿。应首先怀疑
A. 急性肾小球肾炎
B. IgA肾病
C. 过敏性紫癜性肾炎
D. 肺肾综合征
E. 狼疮性肾炎
简单商品经济的基本矛盾是( )。
A. 具体劳动与抽象劳动的矛盾
B. 私人劳动与社会劳动的矛盾
C. 使用价值与价值的矛盾
D. 个别劳动时间与社会劳动时间的矛盾
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