患儿4岁，全身高度水肿2个月，尿蛋白（+++），血浆总蛋白40g/L，血清胆固醇12mmol/L，为明确诊断，以下哪项为非必须检查（）
A.血清尿素氮、肌酐
B.血清蛋白电泳
C.血清补体
D.尿常规检查
E.立即进行肾活检
参考答案：E
解析：患儿具有肾病综合征"三高一低"的典型表现，故在临床上可以确立诊断；肾活检不是儿童肾脏疾病的常规检查项目。
| 完形填空 | |||
| After the Second World War, there were many reports of mysterious "flying saucers (碟子)". They 1 throughout the world. For quite a long time strange shapes had been reported in. 2 parts of the world, but it was not until recent times that these were seriously studied. Pictures and films 3 of flying saucers, or UFOs seen in the sky. Some pilots of 4 reported that round flying machines had followed 5 , and moved at great speeds. Some unofficial (非官方的) experts and 6 suggested that some creatures(生物) from other planets were watching us. Some reports said a UFO had 7 the earth. A space creature 8 the UFO and moved around, then flew off again. But none of the landings was ever proved to be true. What lies ahead of us? We do not know. 9 we are sure that whatever happens, we are living in an age which will grow steadily 10 . | |||
| ( )1. A. see ( )2. A. the same ( )3. A. take ( )4. A. planes ( )5. A. them ( )6. A. people ( )7. A. was ( )8. A. ran away ( )9. A. And ( )10. A. interesting | B. saw B. different B. took B. ships B. they B. teachers B. left B. came into B. But B. interested | C. were seen C. similar C. were taking C. space C. we C. TVs C. arrived C. got out of C. Or C. more interesting | D. seen D. alike D. were taken D. trains D. us D. newspapers D. landed on D. reached D. So D. more interested |