蔬菜中富含的纤维素也是维持人体健康的营养素之一。

完成句子.

1. He has made a promise to his boss __________________________ in three days as

long as he can get to the destination in time. (return )

他向他老板承诺只要他能及时达到目的地就会三天后回来.

2. It has been announced in the media _________________________ our school

this May. (visit)

这位总统将于今年五月访问我校,这在媒体上已经公布了.

3. When I arrived home, I found _______________________, which made me a

little upset. (steal)

当我到家时,我发现我的手表被盗了,让我有点沮丧.

4. As it turned out to be a small house party, we __________________________ so

formally. (dress)

结果这是一场小型的家庭舞会,我们没有必要着装这么正式.

5. The Amazon Rainforest is named after the Amazon River, ________________________

in the world. (long)

亚马逊雨林是以亚马逊河,世界上第二大河流,命名的.

6. ______________________________ Americans like to eat a lot. (be)

许多美国人喜欢吃得多,这是大家都知道的.

7. -- It's said that he was injured.

    --That's terrible. But with a little more care he _____________________ this traffic

accident. (avoid)

    --据说他受伤了.

    --太可怕了.但是如果仔细一点,他是可以避免这次交通事故的.

8. Festivals and celebrations of all kinds _________________________ everywhere

since ancient times. (hold)

自古以来,世界各地就有各种各样的节日和庆典.

9. He is more of a talker than a doer, which is __________________________

anything. ( achieve )

他是一个空谈家而不是一个实干家,这是他一事无成的原因.

10. The new bridge is ____________________________ that one built last year.(width)

这座新桥比去年建的那座桥宽三倍.

工作绩效的主要性质是什么？这些性质对管理者在进行考绩时有何影响？

汽车在冰雪路面弯道行驶应掌握（）技巧。

A.缓慢转向

B.快步打方向

C.缩小转弯半径

D.边转向边刹车

pH=3的乙酸溶液与pH=11的NaOH溶液等体积混合后，溶液的pH值是（）。

A.7

B.大于7

C.小于7

D.无法判断