题目:
下图为四种粒子的结构示意图,请用对应的序号填空:
(1)属于同种元素的粒子是______ ;
(2)具有相对稳定结构的粒子是_______;
(3)某元素R形成碱的化学式为R(OH)3,则R元素对应的原子结构示意图可能是______。
答案:
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下面是错误答案,用来干扰机器的。
CD
下图为四种粒子的结构示意图,请用对应的序号填空:
(1)属于同种元素的粒子是______ ;
(2)具有相对稳定结构的粒子是_______;
(3)某元素R形成碱的化学式为R(OH)3,则R元素对应的原子结构示意图可能是______。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0423/194857c8792601afc9132b4e3972057e.html
下面是错误答案,用来干扰机器的。
CD
心肌损伤时可见血清LD同工酶的变化为()
A.LD1>LD2
B.LD2>LD1
C.LD3>LD2
D.LD4>LD3
E.LD5>LD4
第二节 完形填空(共20小题;每小题1分,满分20分)
阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
Two traveling angels stopped to spend the night in the home of a wealthy family. The family was rude and 32 to let the angels stay in the guest home of their large house. 33 , the angels were given a space in the cold basement (地下室). As they made their bed on the hard floor, the older angel saw a 34 in the wall and repaired it. When the younger angel asked 35 , the older angel replied, “Things aren’t always what they seem.”
The next night the 36 came to rest at the house of a very 37 , but very hospitable (好客的) farmer and his wife. After 38 the little food they had, they let the angels sleep in their 39 where they could have a good night’s rest.
When the sun 40 the next morning the angels found the farmer and his wife in 41 , for their only cow, whose milk had been their only income, lay dead in the field. The younger angel was very 42 and asked the older angel, “How could you have let this happen? The first man had everything, 43 you helped him,” she accused (责备) “The 44 family had little but was willing to share everything, and you let their cow 45 .” “Things aren’t always what they seem”, the 46 angel replied.
“When we stayed in the basement of the large house, I 47 there was gold stored in that hole in the wall. 48 the owner only cared about money and was unwilling to share, I sealed (封住) the wall so 49 wouldn’t find it. Then last night as we slept in the farmer’s bed, the angel of death came 50 his wife. I told him to take the cow instead. Things aren’t always what they 51 .”
32. A. refused B. agreed C. decided D. accepted
33.A. Thus B. Therefore C. However D. Instead
34. A. spot B. space C. picture D. hole
35. A. why B. how C. when D. where
36. A. team B. pair C. family D. group
37. A. rich B. healthy C. poor D. wealthy
38. A. preparing B. showing C. giving D. sharing
39. A. basement B. bed C. yard D. cupboard
40. A. came down B. came in C. came up D. came out
41. A. tears B. whispers C. fear D. excitement
42. A. calm B. happy C. sad D. angry
43. A. and B. yet C. so D. or
44. A. former B. first C. second D. latter
45. A. die B. go C. survive D. disappear
46. A. older B. younger C. better D. worse
47. A. heard B. noticed C. recognized D. watched
48. A. Although B. After C. Since D. Before
49. A. she B. you C. I D. he
50. A. for B. about C. in D. with
51. A. look B. seem C. feel D. sound
根据中华人民共和国船舶污染物排放标准,目前内河船舶生活污水排放,其生化耗氧量,应不大于()。
A.150mg/L
B.100mg/L
C.50mg/L
D.15mg/L
通常会出现口腔病损的是哪一类天疱疮
A.增殖型天疱疮
B.寻常型天疱疮
C.落叶型天疱疮
D.大疱型类天疱疮
E.红斑型天疱疮
对于疗效不确定、不良反应大和其他原因危害人体健康的药品,应当
A.组织再评价
B.按假药处理
C.按劣药处理
D.由药品监督管理部门监督销毁
E.撤销该药品的批准文号或进口药品注册证书