男性，15岁。室间隔缺损，持续高热4天。查体：胸骨左缘第3、4肋间可触及收缩期震颤，

男，62岁，因左眼视物模糊和逐渐视力下降3个月就诊，有高血压病病史9年和糖尿病史3年。眼部检查：右眼矫正视力0.8，左眼矫正视力0.4；结膜轻度充血，角膜正常，晶状体呈楔形浑浊，眼底未见异常。最可能的诊断是（）。

A.急性卡他性结膜炎

B.慢性闭角型青光眼

C.先天性白内障

D.老年性白内障

E.糖尿病性视网膜病变

句型转换。

1. This is a bus. (改为复数句子)

    These ______ some ______.

2. He has never been to Shanghai, ______ ______?(反意疑问句)

3. He was doing his homework at 8:00 last night. (否定句)

    He ________ ________ his homework at 8:00 last night.

4. It's very hot. (对画线提问) 

    ______ the weather ______?

5. Please take care of your sister. (同意句) 

    Please ______ ______ your sister.

所谓基础头寸

道德三经（）.

pH计中的电极是属于下述中的哪一种电极（）

A.气敏电极

B.汞电极

C.离子交换电极

D.酶电极

E.固体膜电极