（）排泄管参与组成射精管。A.睾丸 B.附睾 C.前列腺 D.精囊 E.输精管

下列关于山水画的说法，正确的是（  ）

A．山水画顾名思义，就是以名山大川为描绘内容

B．一般拘泥于客观自然景物的逼真摹写

C．注重用画面传达主观情致与神韵，讲究布局构图

D．写景是山水画的灵魂

暑假期间小张一家为体验生活品质，自驾汽车外出旅游，计划每天行驶相同的路程。如果汽车每天行驶的路程比原计划多19公里，那么8天内它的行程就超过2200公里；如果汽车每天的行程比原计划少12公里，那么它行驶同样的路程需要9天多的时间，求这辆汽车原来每天计划的行程范围（单位：公里）。

阅读短文，然后用括号中所给词的适当形式填空。

It is Spring Festival time. It’s a小题1:   (fun) time to be with our family. What are you going to do? Let’s have a look at the Spring Festival and its fun activities.

The date of the Spring Festival always小题2:( change). Usually the date falls between the end of January and February 19. This year it falls on February 10. But the celebration小题3:(usual) starts one week before Spring Festival Eve.

Xiaonian: We usually clean小题4:(house) on this day. By小题5:(clean) , we can sweep bad luck away. Another thing we do is decorating our homes with spring couples (春联), paper-cuttings and the upside-down “fu” character.

Did you know all about “nian”? A long time ago, a monster (怪物) called Nian ate people on Spring Festival Eve. But Nian was afraid of loud noises, the color red and fire. So people小题6:(play) drums and gongs (锣) and set off fireworks. It scared Nian.

From then on, on Spring Festival Eve, people play drums and gongs, set off fireworks and put up red lanterns. We welcome the new year.

如果x²+mx+16是一个整式的完全平方，那么m=______．

水马使用前应灌水（砂），灌水（砂）量不应小于其内部容积的（）%。

A、60

B、70

C、80

D、90