He () a lot of money since he () his own restaurant business

A、which

B、who

C、those

A、took

B、was taking

C、was taken

A、is situated

B、located

C、situated

A、Why don't we go to

B、Why didn't we go to

C、Why aren't we go to

A、as a result

B、at last

C、in the end

D、therefore

A、don't we

B、shall we

C、aren't we

A、broken

B、break

C、breaking

A. 太阳有黑子

B. 月亮凹凸不平

C. 木星有卫星

D. 以上都观测到了

A. 一个静止的物体，其全部的能量都包含在静止的质量中

B. 物体一旦运动，就要产生动能

C. 运动中所具有的能量应加到质量上

D. 运动的物体的质量不变

A. 毕达哥拉斯定理

B. 笛卡尔定理

C. 牛顿第一定律

D. 欧里几何定理