If the symptoms persist,consult your doctor.

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参考答案: C

参考解析: 本句意思：如果症状持续不消除，就去咨询一下医生。persist意思是“持续，存留”，与continue（继续，持续）意思相近。insist坚持；persevere坚持，不屈不挠；resist抵抗，抗拒。

1 单选题 1分

2 单选题 1分

The commodities were all inspected by the bureau before shipment.

3 单选题 1分

The shabby treatment from his colleagues made him very angry.

4 单选题 1分

She had to restrain herself from crying out in pain.

5 单选题 1分

If the symptoms persist,consult your doctor.