下列几句话,描述天气的是( ) A.夏季高温多雨 B.四季如春 C.全年干燥少雨

题型:选择题

问题:

下列几句话,描述天气的是(  )

A.夏季高温多雨

B.四季如春

C.全年干燥少雨

D.夜来风雨声,花落知多少

考点:气温和气温的分布
题型:选择题
看图,选出与图片意思相符的一项。
( ) 1. A. windy 
            B. sunny 
            C. snowy
( ) 2. A. windy 
            B. sunny 
            C. snowy
( ) 3. A. windy 
            B. sunny 
            C. snowy
( ) 4. A. rainy 
            B. snowy 
            C. cloudy
( ) 5. A. rainy  
            B. windy  
            C. cloudy
题型:选择题

如图所示,虚线a、b、c为三个同心圆,圆心处为一个点电荷.现从b、c之间一点P以相同的速率发射两个质量和电荷量大小相等的带电粒子,分别沿PM、PN运动到圆周c上的M、N两点,以下判断正确的是

A.两粒子带同种电荷

B.两粒子带异种电荷

C.到达M、N时两粒子速率仍相等

D.到达M、N时两粒子速率

题型:选择题

随着民用爆破器材生产原料成本的不断攀高,国家先后()次大幅度提高了民用爆破器材基准价。

A.二

B.三

C.四

D.五

题型:选择题

词汇

小题1:It was really an            (pleasant) trip. I felt sick from morning to evening.

小题2:My parents will celebrate their fifteen years of             (marry) this Saturday,

小题3:Miss Wu always buys a newspaper when he         (pass) the market every day.

小题4:We all           (clap) when the singer appeared on the stage.

小题5:Chinese is used more and more            (wide) around the world.

小题6:With the           (发展)of modern science, people have lived a happy life.

小题7:There is            (少) air pollution in the countryside than in the city now.

小题8:Thanks for           (借) me your umbrella. Otherwise, I would get wet in the rain.

小题9:Chairman Xi Jinping is having an __________ (采访)with President George Bush.

小题10:The Greens have            (到达) Nanjing already.

题型:选择题
如图所示,矩形线圈有N匝,长为a,宽为b,每匝线圈电阻为R,从磁感应强度为B的匀强磁场中以速度v匀速拉出来,那么,产生的感应电动势和流经线圈中的感应电流的大小应为(  )

A.E=Bav,

B.E=NBav,

C.E=Bav,

D.E=NBav,

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