一个三角形的面积是24平方厘米，高是8厘米，它的底是（ ）cm．
| A．3 | B．1.2 | C．6 | D．1.5 |
﹣I have been to Mars several times．
﹣You ______ be joking．It's impossible．（ ）
A．canB．mayC．must
﹣A Spring Morning is my favorite poem ____ has beautiful words．
﹣I'm fond of it，too．（ ）
A．whoB．whichC．whom
﹣What do you think of the film，Captain America：Civil War？
﹣______（ ）
A．It's wonderful．
B．It's my pleasure．
C．It's very nice of you．
﹣Ouch!My knees hurt _______．
﹣Sorry to hear that．You'd better go to see a doctor．（ ）
A．badlyB．sadlyC．quietly
﹣Look at this model plane．Michael made it all by_________
﹣Wow!He is so smart．（ ）
A．myselfB．himselfC．herself