______ left when you get to the end of t

题型:选择题

问题:

______ left when you get to the end of the street.

A.Keep

B.Keeping

C.To keep

D.Kept

考点:祈使句感叹句
题型:选择题

既往感染甲型肝炎,获得了特异性免疫力

A.乙肝五项为HBsAg、HBeAg、抗- HBc阳性
B.抗-HBs、抗-HBe、抗-H1Bc阳性, HBV-DNA阴性
C.抗-HBs阳性
D.抗-HAVIgM阴性,抗-HAVIgG阳性
E.HBsAg、抗-HBc阳性,抗-HCV阳性

题型:选择题

产品质量责任是一种综合的()

A.法律责任

B.民事责任

C.刑事责任

D.行政责任

题型:选择题

There are many kinds of friends. Some are always (1) you, but don’t understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only (2) friends leave footprints.
I shall always recall the autumn and the girl with the (3) . She will always bring back the friendship between us. I know she will always be my best friend.
It was the golden season. I could see the yellow leaves (4) with the cool (5) . In such a season, I liked walking alone on the roads covered with leaves, (6) to the sound of them.
Autumn is a (7) season and life is uninteresting. The free days always get me (8) . But one day, the sound of a violin (9) into my ears like a stream flowing in the mountains. I was so surprised that I jumped to see what it was. A young girl, standing in the wind, was (10) in playing her violin.
I had (11) seen her before. The music was so nice that I listened quietly. Lost in the music, I didn’t know that I had been (12) there for so long but my existence did not seem to disturb her.
Leaves were still falling. Every day she played the violin at the comer of the building (13) I went downstairs to watch her performance. I was the only listener. The autumn seemed no longer lonely and life became (14) . (15) we didn’t know each other, I thought we were already good friends. I believe she also loved me.
Autumn was nearly over. One day, when I was listening carefully, the sound suddenly (16) . To my astonishment, the girl came over to me.
"You must like music from the violin." she said.
"Yes. And you play very well. Why did you stop’." I asked.
Suddenly, a (17) expression appeared on her face and I could feel something unusual.
"I came here to see my grandmother, but now I must leave. I once played very badly. It was your listening every day that (18) me. " she said.
"In fact, it was your playing (19) gave me a meaningful autumn," I answered, " Let’s be friends. "
The girl smiled, and so did I. I never heard her play again in my life. I no longer went downstairs to listen to her. Only thick leaves were left behind. But I will always remember the fine figure of the girl. She is like a (20) —so short, so bright, like a shooting star giving off so much light that makes the autumn beautiful.

Ⅱ. 完形填空/Close

A.watching

B.listening

C.seeing

D.hearing

题型:选择题

为什么饱和压力随饱和温度升高而增高?

题型:选择题

仪表回路图一般分为左、右两个区域,左边代表现场,现场又可分为()。

A、接线箱

B、辅助柜

C、工艺区

D、操作台

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