My father recommended that I _____ my of

阅读短文，根据短文内容判断正误，正确的写"T"，错误的写"F"。

      Yesterday was Sunday. Jack and Susan went to Tian'anmen Square. It was cold and windy. They

played with their friends from nine to eleven in the morning. Then they went home by taxi. Today Susan

feels very bad. She has a cold. But Jack is very well.He'll buy some medicine(药)for Susan.

( ) 1. Yesterday was warm and sunny.

(     ) 2. Jack and Susan took a taxi to go home yesterday.

(     ) 3. Susan is ill today.

(     ) 4. Jack had some medicine yesterday.

-----What _______ he _________like?  -----He’s tall and thin.

A．is; look

B．does; looks

C．does; look　　　

D．is; looks

肿瘤标志物检测的精密度要求是（）

A.批内CV＜5%，批间CV＜10%

B.批内CV＜10%，批间CV＜15%

C.批内CV＜15%，批间CV＜20%

D.批内CV＜5%，批间CV＜5%

E.批内CV＜10%，批间CV＜10%

以N甲基二乙醇胺为主体的脱硫剂配制时一般（）。

A、用新鲜水

B、用除氧水

C、按不大于40%浓度配制

D、按不大于60%浓度配制

下图为卫星所摄地球光照图，图中a点的经度为15°E，由图可知此时（）

A.a点地方时为18时

B.北京正处于午休时间

C.非洲南部草原茂盛

D.苏伊士运河昼短夜长