【名词&注释】
实验设计(experimental design)、天南星(dragon arum)、匀速直线运动(uniform linear motion)、两性花(hermaphrodite flower)、稀盐酸(dilute hydrochloric acid)、不一样(unlikeliness)、花样滑冰运动员(figure skater)、石蕊试纸(litmus paper)、筒状花(discoid flower)、舌状花(ligulate flower)
[单选题]下列实验设计和结论相符的是
A. 将碘水倒入分液漏斗，加适量乙醇，振荡后静置，可将碘萃取到乙醇中
B. 某气体能使湿润的红色石蕊试纸(litmus paper)变蓝，该气体水溶液一定显碱性
C. 某无色溶液中加Ba(NO3)2溶液，再加入稀盐酸，沉淀不溶解，则原溶液中一定有SO42-
D. 在含FeCl2杂质的FeCl3溶液中通足量Cl2后，充分加热，除去过量的Cl2,即可得到较纯净的FeCl3溶液
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举一反三：
[单选题]Why did American city residents want to live in the suburbs after World War Ⅱ?
A. Because older American cities were dying.
B. Because they were richer and needed more space.
C. Because cities contained the wont pare of society.
D. Because they could hardly afford a live in the city.
[单选题]做下列运动的物体，能当作质点处理的是
A. 自转中的地球
B. 旋转中的风力发电机叶片
C. 在冰面上旋转的花样滑冰运动员(figure skater)
D. 匀速直线运动的火车
[单选题]Diabeitcrockstar.com was created for _________.
A. diabetics to communicate
B. volunteers to find jobs
C. children to amuse themselves
D. rock stars to share resources.
[单选题]
B．work
C．school
D．hospital
A. bedB．work
B. school
C. hospital
[多选题]菊科各类花中，( )为非两性花。
A. 筒状花(discoid flower)
B. 舌状花(ligulate flower)
C. 假舌状花(ligulate flower)
D. 二唇花
E. 漏斗状花
[单选题]
A. until after
B. ever since
C. so that
D. long before
[单选题]To improne the pmlity of our products we uaked for nuggratior a had used the producu.
A. whacver B．who
B. whichever D．which
[单选题]Amy joined a painting group but didn’t seem to _______, so she left.
A. show off
B. go up
C. fit in
D. come over
[单选题]天南星有10～19片叶轮生于茎顶。( )
A. 正确
B. 错误
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