妈妈准备给家里的圆形餐桌买一块正方形桌布,量得圆形桌面的直径是1.2米,高是1.

题型:解答题

问题:

妈妈准备给家里的圆形餐桌买一块正方形桌布,量得圆形桌面的直径是1.2米,高是1.5米,若要使铺在桌面上的正方形桌布的四角恰好刚刚接触地面,正方形桌布的对角线长应是多少米?

考点:小数的加法和减法
题型:解答题

选出对加横线的词解释错误的项(单选题)

①海内存知己,天涯比邻(似,像)    ②若入前为寿(如果)

②若止印三二本,未为简易(假如,如果)④曾不若孀妻弱子(及,比得上)

⑤若夫霪雨霏霏,连月不开”(若夫:用在一段话开头,用以引起下文)

题型:解答题

十二指肠溃疡的X线直接征象包括()

A.球部变形

B.球部激惹征

C.球部龛影

D.幽门痉挛

E.球后部痉挛

题型:解答题

______是市场体制的三大支柱。

A.生产资料市场、劳动力市场、消费品市场

B.商品市场、资本市场、劳动力市场

C.商品市场、生产资料市场、技术信息市场

D.资本市场、劳动力市场、房地产市场

题型:解答题

一个由AT89C51单片机与一片ADC0809组成的数据采集系统,ADC08的地址为7FF8H~7FFFH。硬件逻辑电路图如下,下面程序是利用中断方式,分别对8路模拟信号轮流采样一次,转换结果依次存放在首址为30H的片外数据RAM中。完成中断服务程序填空。
[*]
ORG 0000H
AJMP MAIN
ORG 0013H
AJMP INT1
MAIN: MOV R1,#30H
MOV R7,#08H
MOV DPTR,#07FF8H
SET IT1
SET EX1
SET EA
HERA: SJMP HERE
中断服务程序:
INT1: MOVX A,
MOVX,A
R1
INC
DJNZ,READ

:MOVX,A
RET1

题型:解答题

Read the argument and the instructions that follow it, and then make any notes that will help you plan your response. Write your response on a separate sheet of paper. If possible, type your essay on a word processor. Observe the 30-minute time limit.
The following letter was printed in a medical journal:
Many nonprescription drugs can cause serious side effects, particularly when taken in conjunction with other drugs or in large quantities. If these potentially harmful nonprescription drugs were sold only by prescription, then a doctor or pharmacist would be able to explain the possible side effects of the drug and would also be able to monitor the quantity of the drug purchased, thereby decreasing the chance that a person would take too much of the drug. Therefore, any drug with potentially serious side effects should be sold only by prescription.
Discuss how well reasoned you find this argument. In your discussion, be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative examples or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion.

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