胎儿中枢神经系统最常见畸形是
A. 无脑儿
B. 脑积水
C. 脊柱裂
D. 全前脑无裂畸形
E. 脑肿瘤
钩端螺旋体的传染源主要是
A. 患者
B. 带菌者
C. 鼠类
D. 牛
E. 犬
According to the passage, an artist is different from a handicraftsman in that______.
A. the former is more beautiful than the latter
B. the latter is more independent than the former
C. the latter is more honored than the former
D. the former is more imaginative than the latter
According to the passage, which of the following statements is NOT true
A. Hewet was in love with Rachel but he did not want to marry her.
B. Hewet saw in his mind unpleasant pictures of married couples.
C. Hewet believed married women were worse than married men.
D. Hewet's most individual and humane friends were not marrie
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