JPEG图像压缩标准可应用于 (43) 图像。在JPEG图像有损压缩编码过程中，主要

确定关键控制点（CCP）的重要因素之一是（）。

A.可消除和预防危害

B.可被监测并制定危害的控制程度

C.具有较高的严重性和危险性

D.该环节之后没有消除或最大可能减少危害的操作

E.A+B+C+D

早劳动争议案件中，诉讼的必经程序是（）

A.协商

B.调解

C.仲裁

D.判决

下列句子中，没有语病的一项是

A．人大代表履行职责水平的高低、作用的大小，直接关系到宪法和法律赋予职权的作用的发挥，影响到会议效果的好坏。

B．莫言的作品综合性强，要把它翻译为外文，就要求译者要熟知中国历史文化、风俗民情，必须具有相当的翻译水平才能胜任。

C．今年是国务院确定的《重大节假日免收小型客车通行费》后的第一个春节假日，长、短途自驾游客大量增加，出现了第一轮的旅游高潮。

D．新一届领导集体从中国现实出发，将保障和尊重 * * 作为治国原则写入宪法，这是对社会主义建设理论和实践的一大创新，是对马克思主义的丰富和发展。

性能功效相类似的药物合用，使原有功效增强的配伍是( )

A．相使

B．相畏

C．相杀

D．相恶

E．相须

Letter A

Dear Rose,

I like your programmes very much. I’m now writing to ask you something about American social customs. My American friends want me to join them in their dinner party. I am very happy and have decided to go, but I’m a little worried about it, too. The social customs in my country are very different from here, so I’m afraid of making mistakes.

Should I bring a present, such as sweets or flowers Should I arrive on time or a little late At the dinner table, how can I know which fork or knife to use How can I let the family know that I’m thankful for their kindness

Wang Lin

Letter B

Dear Wang Lin,

It’s a good idea to bring a small present when you go to a dinner party. Flowers are always nice, or you may bring a bottle of wine if you know that your friends drink it.

You should arrive on time or five to ten minutes late. Don’t get there early. If you’re going to be more than fifteen minutes late, you should call and tell them.

Try. to be free at the dinner table. If you don’t know about choosing the right fork or knife, just watch the other people, and follow them. If you still have no idea of what to do, ask the person next to you.

If you like the food, say so. Of course, you’ll thank them for the meal and for their kindness. It’s also a good idea to send a thank you card the day after.

Rose

From the letters we’ve learned that it’s very （）to know something about American social customs.

A．difficult

B．friendly

C．enjoyable

D．helpful