下列说法正确的是( ) A.由同种元素组成的物质是单质 B.电离时能产生H+的化

题型:选择题

问题:

下列说法正确的是(  )

A.由同种元素组成的物质是单质

B.电离时能产生H+的化合物就是酸

C.二氧化硫是由硫原子和氧分子构成的

D.分子是保持物质化学性质的一种微粒

考点:分子的定义分子的特点构成物质的微粒(分子、原子、离子)单质和化合物酸、碱、盐
题型:选择题

小题1: ---Have you seen my email about my latest project?

---Yes. Luckily, I checked my emails yesterday. Normally, I ________(not open) my email-box.

小题2:The new kind of mobile phone you are crazy about _______ (sell) out yesterday.

小题3:---It seems to be hotter outside today.

---Yes, the temperature _______ (rise) to above 28 in Wuxi and it is likely to get even hotter

the next few days.

小题4:---I wonder if you could go with me to the cinema.

---I’d like to, but I _______ (write) my experiment report and have to finish it this afternoon.

小题5: It is cheaper to send a text message than ____________(talk) on a mobile phone.

小题6:---Hurry up! Alice and Sue are waiting for you at the school gate.

---Oh! I thought they _______ (go) without me.

小题7: The cinema that I used to go to _______ (pull) down in two days.

小题8:You can’t imagine how much difficulty the company had_______ (offer) the graduates more

job chances.

题型:选择题

患者,男性,68岁,诊为慢性阻塞性肺疾病5年,曾因呼吸衰竭2次住院,目前处于稳定期,医嘱进行呼吸训练,患者呼吸训练的方法需要纠正的是()。

A.立位,上半身略前倾

B.用鼻吸气,经口呼气

C.吸气时腹壁下陷,呼气时腹壁鼓起

D.吸气与呼气的时间比例为1:(2~3)

E.呼吸缓慢而均匀

题型:选择题

可引起肝浊音界缩小的是()。

A.急性肝炎

B.右肺不张

C.肝癌

D.急性肝坏死

E.急性胃肠穿孔

题型:选择题

2012年全国“两会”期间,对人体健康和大气环境质量有重大影响的“PM2.5”(可吸入肺颗粒物)成为人大代表和政协委员热议的重要话题。这是人大代表和政协委员

A.关注民生,重视发展

B.支持和保证人民当家作主

C.参政议政,依法行政

D.代表人民行使国家权力

题型:选择题

风疹的隔离期是:

A.至皮疹消退

B.至皮疹消退后5天

C.至出疹后5天

D.至淋巴结肿大消失

E.至发热消失

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