起重机的钢索将重物由地面吊到空中某个高度，其速度图象如图所示，则钢索拉力的功率随时间变化的图象可能是
China is Asian country，while France is European country.
A．an；aB．a；anC．an；anD．a；a
It is hard for people to move forward with a strong wind ___________hard.（ ）
A．blownB．blowingC．to blow
﹣﹣﹣How wonderful the school concert is!I wonder________ our school will hold it next year.
﹣﹣﹣Sure.It's our school tradition!（ ）
A．howB．ifC．where
Zhang Hong，a Chinese，is the first Asian blind climber_________ has reached the top of Qomolangma.（ ）
A．whoB．whoseC．which
The Party's 100th birthday ____________ on July 1st this year in our country.（ ）
A．will be celebratedB．has been celebrated
C．will celebrate
粤公网安备 44130202000953号