单项选择题配伍题：治疗急性早幼粒细胞白血病（） A.CHOP B.DA C.苯丁酸氮芥 D.MOPP

题型：单项选择题配伍题

（8分）某金属材料制成的电阻R_r阻值随温度变化而变化，为了测量R_r在0到100℃之间的多个温度下的电阻阻值。某同学设计了如图所示的电路。其中A为量程为1mA、内阻忽略不计的电流表，E为电源，R₁为滑动变阻器，R_B为电阻箱，S为单刀双掷开关。

①完成下面实验步骤中的填空：

a．调节温度，使得R_r的温度达到T₁，

b．将S拨向接点l，调节_______，使电流表的指针偏转到适当位置，记下此时电流表的读数I；

c．将S拨向接点2，调节_______，使_______，记下此时电阻箱的读数R₀；

d．则当温度为T₁时，电阻R_r=________：

e．改变R_r的温度，在每一温度下重复步骤②③④，即可测得电阻温度随温度变化的规律。

②由上述实验测得该金属材料制成的电阻R_r随温度t变化的图象如图甲所示。若把该电阻与电池（电动势E=1.5V，内阻不计）、电流表（量程为5mA、内阻Rg=100）、电阻箱R串联起来，连成如图乙所示的电路，用该电阻作测温探头，把电流表的电流刻度改为相应的温度刻度，就得到了一个简单的“金属电阻温度计”。

a．电流刻度较大处对应的温度刻度_______；（填“较大”或“较小”）

b．若电阻箱取值阻值，则电流表5mA处对应的温度数值为_______℃。

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完形填空。
Have you ever planted a few trees on Tree Planting Day? Each year, millions of people, both __1__, plant a lot of trees. But this may not be the best way to make your home a __2__ place. Last week we visited a park in Hebei. We were __3__ to find most of the trees had been burned. The workers told us that the trees __4__ soon after they were planted because they weren’t watered well enough. __5__ workers burned them and cleaned the place for __6__ trees to be planted this year. __7__ a card found in one of the dead trees, a student wrote,” I hope this tree will grow up with me to __8__ the backbone (栋梁) of our country.” The workers said that the survival(存活) of the trees was really more important than __9__ trees were planted. Some people in Beijing now have a new idea that they can donate (捐赠) some money and let professional (专业人士) plant and __10__ the trees.
( )1. A. students and teachers ( )2. A. smaller ( )3. A. pleased ( )4. A. died ( )5. A. Though ( )6. A. few ( )7. A. Over ( )8. A. need ( )9. A. how many ( )10. A. take out	B. old and young B. colder B. happy B. grew B. When B. old B. From B. hold B. when B. take down	C. boys and girls C. warmer C. interesting C. bought C. Because C. new C. On C. plant C. how soon C. take up	D. mother and father D. larger D. surprised D. planted D. So D. dead D. About D. be D. why D. take care of

治疗急性早幼粒细胞白血病（） A.CHOP B.DA C.苯丁酸氮芥 D.MOPP

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