下列各句没有语病的一句是[ ] A、对学生的表扬，既要适当，又要适度；过分的溢美

下图是四条河流的纵剖面图。若四河的落差相同，且仅从河流落差的角度考虑。回答1—2题。

1、从源头到一半流程的河段内，水能最丰富的是[ ]

A．①河

B．②河

C．③河

D．④河

2、河口三角洲和冲积平原发育最广泛的是[ ]

A．①河

B．②河

C．③河

D．④河

肝功能检查的目的包括（）.

A.判断有无肝损伤及其程度

B.协助黄疸的鉴别诊断

C.评价肝脏储备功能

D.协助胆结石的诊断

E.协助肝病病因学诊断

在设施栽培中，蔬菜生产占到总生产面积的（）。

A.60%左右

B.70%左右

C.80%左右

D.90%左右

There was a woman in Detroit, who had two sons. She was worried about them, especially the younger one, Ben, because he was not doing well in school. Boys in his class played jokes on him because he seemed so (21) The mother (22) that she would help her sons to do (23) in school by herself. She told them to go to the Detroit Public Library to (24) a book a week and do a book report for her.
One day, in Ben’s class, the teacher held up a rock and asked (25) anyone knew it. Ben put up his hand and the teacher let him (26) . "Why did Ben raise his hand" all of his (27) whispered (耳语) and wondered. "He (28) said anything. What could he possibly want to say" To their surprise, Ben not only (29) the rock, but also said a lot about it. He (30) other rocks in its group and even knew (31) the teacher had found it. The teacher and the other students were (32) Ben had learned this from doing one of his book (33) .
Later Ben became the (34) student of his class. When he finished high school, he went to Yale University and (34) became one of the best doctors in the United States.

Ⅱ. 完形填空

/Close
阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中选出一个最佳选项。

A．found

B．played

C．knew

D．heard

辐射力