海关统计是国家进出口货物贸易统计，是国民经济统计的重要组成部分。 ( )

据报道，在300℃、70MPa下由二氧化碳和氢气合成乙醇已成为现实：2CO₂(g)+6H₂(g)CH₃CH₂OH(g)+3H₂O(g)。下列叙述错误的是 [ ]

A.使用Cu-Zn-Fe催化剂可大大提高生产效率

B.反应需在300℃进行可推测该反应是吸热反应

C.充入大量CO₂气体可提高H₂的转化率

D.从平衡混合气体中分离出CH₃CH₂OH和H₂O可提高CO₂和H₂的利用率

One of China’s most popular folk arts is paper cutting（剪纸）. Archaeological(考古学的) finds trace the tradition back to the 6^th century; it is supposed that the beginnings of paper cutting were even a few centuries earlier. Paper cuttings are used for religious(宗教的) purposes, for decoration (装饰)and as patterns(图案).

Today, paper cuttings are mainly used as decoration. They ornament walls, windows, doors, columns mirrors, lamps and lanterns in homes. They are also used for decoration on presents, and are given as presents themselves. They are of special importance at festivals. At the Spring Festival for example, entrances are decorated with paper cuttings which are supposed to bring good luck.

Paper cuttings are not produced by machine, but by hand. There are two kinds of paper cuttings; scissor (剪刀) cuttings and knife cuttings. Scissor cuttings are fashioned with scissors. Several pieces of paper--- up to eight pieces---are fastened together. The motif(图形) is then cut with sharp, pointed scissors.

Knife cuttings are fashioned by putting several layers (层) of paper on a relatively soft foundation consisting of a mixture of tallow (动物脂) and ashes. Following a pattern, the artist cuts the motif into the paper with a sharp knife which he usually holds vertically(垂直地). The advantage of knife cuttings is that considerably more paper cuttings can be made in one operation than scissor cuttings.

In the countryside, paper cuttings are usually made only by women and girls. This used to be one of the skills that every girl was to master and that were often used to judge brides(新娘). Professional paper cutting artists are, on the other hand, almost always men who have guaranteed (保证) incomes and work together in workshops.

小题1:Paper cuttings can be used for ______________.

A．decoration

B．decoration on presents

C． presents

D．all of the above小题2:The underlined word ornament means ______________.

A．to be added to and make something beautiful

B．to be used as

C．to be cut in

D．to be made on小题3:Which is the best title of this passage?

A．The ways of paper cutting

B．The reasons for paper cutting

C．The purposes of paper cutting

D．Paper cutting

张某、李某经共谋后于深夜持刀进入一狭窄小巷抢劫。张某叫李某把住街口，自己进入小巷抢劫了一妇女2000元。张某与李某会合后对李某说：“什么也没抢着，这妇女身上一分钱也没有。”李某信以为真。张某、李某的行为：

A．张某、李某均构成抢劫罪既遂
B．张某构成抢劫罪，李某不构成犯罪
C．张某构成抢劫罪既遂，李某构成抢劫罪未遂
D．张某、李某均构成抢劫罪未遂

时钟：手表

A．电脑：鼠标

B．火车：飞机

C．电视机：遥控器

D．录音机：收音机

关于CDMA2000组网设备，以下正确的说法是（）。

A.室内分布系统不能采用直放站

B.射频拉远模块使用光纤作为传输部件，因此拉远距离没有限制

C.直放站扩展了施主基站覆盖范围，进而间接增加了施主基站的容量

D.功分器会给前向链路引入至少3dB损耗