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问题 选择题

由氮气、氧气和二氧化碳等多种气体组成，其中生活的生物主要是昆虫、鸟类，另外还有细菌等微小生物的圈层是

A．大气圈

B．水圈

C．岩石圈

D．生物圈

答案

答案：A

题目分析：大气圈的下层气体有氮气、氧气和二氧化碳等，其中生活的生物主要是昆虫、鸟类等飞行生活的动物和细菌等微生物，所以选A

多项选择题

下列有关CIP术语的叙述，正确的是( )。

A．属于到达合同

B．适用于水陆运输方式

C．CIF合同是典型的象征性交货

D．其变形只涉及卸货费用的划分
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单项选择题

Personal computers are used by one person at a time. The largest personal computer, or PCS, can fit on a (1) . Some of these (2) have more than one microprocessor. (3) the primary processor, which is a general-purpose device, a PC may have one or more processors to (4) special kinds of work. Some machines, (5) , have maths processors, others have graphics processors to help process photographs and other illustrations. Still others have (6) processors.
Office workers also use PCS that are not (7) to a network. These machines are used for (8) tasks as word processing, performing financial calculations, and organizing and (9) bodies of information called databases. People use PCS at (10) for some of the same kinds of tasks. They use word processing programs for (11) Communication, financial software for household budgets. Individuals also use their home computers to play (12) and to communicate (13) the internet.
Small, portable PCS are (14) with people who often work away from their desks. The (15) include laptop computers, which can be (16) on the lap; notebook computers, which are about the (17) of a loose leaf notebook; and palmtop, or handheld computers, which can be operated while (18) in the hand. Laptop and notebook computers have the same (19) as desktop computers. Palmtop computers have less power but still (20) some advanced capabilities. For example, they can process household financial data.

二、完形填空

A．provide

B．supplied

C．offer

D．give
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