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【简答题】
人们的生活与化学密切相关． （1）小刚为净化收集到的雨水，自制了一个如图1所示的简易净水器，其中小卵石和石英砂的作用是_________；活性炭的作用是 _________ ；矿泉水、蒸馏水、自来水和净化后的雨水都是生活中常见的“水”，其中属于纯净物的是 _________ ． （2）农作物的种子经过发酵、蒸馏制得的乙醇被称为“绿色汽油”．乙醇的分子结构模型如图2所示． ①乙醇是由_________；一个乙醇分子中含有_________； ②乙醇中氧元素的质量分数为_________．（结果保留1位小数） （3）衣服上的油污，可以用汽油洗净，其原理是 _________ ；也可以用加了洗涤剂的水洗净，其原理是 _________ ．
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参考答案：
举一反三
【单选题】Tom ______ his leg yesterday.
A.
hurted
B.
hurt
C.
to  hurt
D.
hurting
查看完整题目与答案
【判断题】Tom fell and broke his leg.
A.
正确
B.
错误
查看完整题目与答案
【单选题】—— What’s wrong with Tom? —— Bad luck! Tom his bike and hurt his leg.
A.
fell
B.
fell off
C.
fell down
D.
fell behind
查看完整题目与答案
【单选题】What's the matter with Tom?
A.
He threw his bike away.
B.
He hurt (使受伤,伤害) his leg.
C.
He sold his bike.
查看完整题目与答案
【单选题】【A2 题型】 患者女性,18岁,左脚趾甲沟炎并发甲下脓肿,疼痛重,压痛明显。应采取的最佳措施是
A.
理疗
B.
热敷
C.
抗生素
D.
拔除指甲
E.
在甲沟处切开引流
查看完整题目与答案
【单选题】Tom _______ his leg in a skating accident.
A.
hurt
B.
wounded
C.
injured
D.
hit
查看完整题目与答案
【单选题】---Tom hurt his left leg in the game this morning. ---Really? It would take at least two weeks ______ he could recover and return to school.
A.
when
B.
that
C.
since
D.
before
查看完整题目与答案
【单选题】具有解表退热,疏肝解郁,升举阳气功效的药是:
A.
桑叶
B.
薄荷
C.
柴胡
D.
升麻
E.
葛根
查看完整题目与答案
【单选题】How is Tom?
A.
He has a bad cold.
B.
He has a headache.
C.
His leg is hurt.
查看完整题目与答案
【单选题】患者女性,18岁,左脚趾甲沟炎并发甲下脓肿,疼痛重,压痛明显。应采取的最佳措施是
A.
理疗
B.
热敷
C.
抗生素
D.
拔除指甲
E.
在甲沟处切开引流
查看完整题目与答案
相关题目：
【单选题】Tom ______ his leg yesterday.
A.
hurted
B.
hurt
C.
to  hurt
D.
hurting
查看完整题目与答案
【判断题】Tom fell and broke his leg.
A.
正确
B.
错误
查看完整题目与答案
【单选题】—— What’s wrong with Tom? —— Bad luck! Tom his bike and hurt his leg.
A.
fell
B.
fell off
C.
fell down
D.
fell behind
查看完整题目与答案
【单选题】What's the matter with Tom?
A.
He threw his bike away.
B.
He hurt (使受伤,伤害) his leg.
C.
He sold his bike.
查看完整题目与答案
【单选题】【A2 题型】 患者女性,18岁,左脚趾甲沟炎并发甲下脓肿,疼痛重,压痛明显。应采取的最佳措施是
A.
理疗
B.
热敷
C.
抗生素
D.
拔除指甲
E.
在甲沟处切开引流
查看完整题目与答案
【单选题】Tom _______ his leg in a skating accident.
A.
hurt
B.
wounded
C.
injured
D.
hit
查看完整题目与答案
【单选题】---Tom hurt his left leg in the game this morning. ---Really? It would take at least two weeks ______ he could recover and return to school.
A.
when
B.
that
C.
since
D.
before
查看完整题目与答案
【单选题】具有解表退热,疏肝解郁,升举阳气功效的药是:
A.
桑叶
B.
薄荷
C.
柴胡
D.
升麻
E.
葛根
查看完整题目与答案
【单选题】How is Tom?
A.
He has a bad cold.
B.
He has a headache.
C.
His leg is hurt.
查看完整题目与答案
【单选题】患者女性,18岁,左脚趾甲沟炎并发甲下脓肿,疼痛重,压痛明显。应采取的最佳措施是
A.
理疗
B.
热敷
C.
抗生素
D.
拔除指甲
E.
在甲沟处切开引流
查看完整题目与答案
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