[单项选择]新生儿生后24小时之内出现黄疸,应首先考虑()。 A. 新生儿肝炎 B. 新生儿溶血病 C. 先天性胆道闭锁 D. 新生儿败血症 E. 母乳性黄疸
参考答案:B
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第1题: [单项选择]The committee () the problem for a whole afternoon but they have not yet reached an agreement. A. has discussed B. has been discussing C. are discussing D. have been discussing 参考答案:D 答案解析:
committee是集合名词,后面的谓语用复数.现在完成进行时照应后文“they have not yet reached an agreement”。