单项选择题：患者，男性，47岁，3小时前在劳动中无明显诱因突然出现上腹部剧烈刀割样疼痛，迅速遍及

题型：选择题

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题型：完形填空

       Traffic rules are made to keep order on the road. They also help to keep people   1  .
       The pedestrian (行人) has as many rules to   2   as the driver of a car. You should walk at the
sidewalk or at the   3 the road. Always look carefully before you walk across the street.
       If you like riding a bike, don't ride in the middle of the road or run   4   red traffic lights. When you
ride a bike with a friend, don't look around to talk.
       If you drive, you should   5   at the traffic lights. You must always   6   a seat belt (安全带). Without
belts   7   the driver and the passengers may be badly hurt in a sudden accident. Someone may be thrown
out through the window.
       You may not need to drive a bus, but _8   if you have to travel in one. Get in or get off a bus only
when it has come to a   9 . When it is full, don't try to get inside 10   you may fall off.
       Traffic rules are also called Road Safety rules. The  maxim (格言 ) for all road users is "thinking
about others. "

( )  1. A. healthy
( )  2. A. follow
( )  3. A. edge
( )  4. A. through
( )  5. A. speed up
( )  6. A. take
( )  7. A. half
( )  8. A. look around
( )  9. A. sign
( ) 10. A. and

B. safe
B. make
B. rim
B. across
B. go ahead
B. wear
B. neither
B. take care
B. stop
B. so

C. happy
C. break
C. end
C. along
C. get off
C. carry
C. both
C. take a seat
C. corner
C. or

D. careful
D. pass
D. side
D. around
D. slow down
D. bring
D. all
D. look back
D. crossing
D. but

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题型：实验题

（1）（3分）用游标上标有10个小格的游标卡尺测量一工件的直径，得到如图所示的结果，由于遮挡，只能看到游标的后半部分，则工件的直径是 mm

（2）（6分）某电压表的内阻在3～5KΩ之间。现要尽可能准确得测量其内阻，实验室可提供的器材如下：

待测电压表V₁（量程3V）

电压表V₂(量程5V，内阻约10KΩ)

电流表A（量程0.6A，内阻约10Ω）

滑动变阻器R（0～10Ω,2A）

定值电阻R₀=3KΩ

电源电动势6V，内阻不计

导线、开关适量

①（3分）在方框中画出该实验的电路图

②（3分）请用已知量和测量量对应的字母表示被测电压表内阻的表达式：R_V=

（3）（9分）某同学设计了如图所示的装置来探究加速度与力的关系。弹簧秤固定在一合适的木板上，桌面的右边缘固定一支表面光滑的铅笔以代替定滑轮，细绳的两端分别于弹簧秤的挂钩和矿泉水瓶连接。在桌面上画出两条平行线MN、PQ，并测出间距d₀。开始时将模板置于处，现缓慢向瓶中加水，直到木板刚刚开始运动为止，记下弹簧秤的示数F₀，以此表示滑动摩擦力的大小。再将木板放回原处并按住，继续向瓶中加水后，记下弹簧秤的示数F₁，然后释放木板，并用秒表记下木板运动到PQ处的时间。