中學教師資格證
篩選結(jié)果 共找出5359題

Many automobile accidents were ____ careless driving.

A

attributed to

B

resulted in

C

contributed to

D

raised from

某黑色固體粉末可能是Fe、FeO、CuO和C中的一種或幾種．取黑色粉末，加入一定量的稀硫酸，待充分反應后過濾，得到濾液和濾渣，在濾液中插入一根潔凈的鐵絲．有關(guān)說法正確的是（ ）

A

若濾液呈淺綠色，則原黑色固體粉末中一定有Fe

B

若鐵絲表面只有紅色固體析出，則濾渣中一定無CuO

C

若鐵絲表面無明顯現(xiàn)象，則濾渣中最多有四種物質(zhì)

D

若鐵絲表面只有氣泡產(chǎn)生，則濾液中溶質(zhì)一定有H2SO4和FeSO4

下列有關(guān)純鐵的描述正確的是（ ）

A

熔點比生鐵的低

B

與相同濃度的鹽酸反應生成氫氣的速率比生鐵的快

C

在潮濕空氣中比生鐵容易被腐蝕

D

在冷的濃硫酸中可鈍化

某化妝品的組分Z具有美白功效，原從楊樹中提取，現(xiàn)可用如下反應制備：


???????

下列敘述錯誤的是（ ）

A

X、Y和Z均能使溴水褪色

B


???????

C

Y既能發(fā)生取代反應，也能發(fā)生加成反應

D

Y可作加聚反應單體，X可作縮聚反應單體

下列對氨基酸和蛋白質(zhì)的描述正確的是（ ）

A

蛋白質(zhì)水解的最終產(chǎn)物是氨基酸

B

氨基酸和蛋白質(zhì)遇重金屬離子均會變性

C

α﹣氨基丙酸與α﹣氨基苯丙酸混合物脫水成肽，只生成2種二肽

D

氨基酸溶于過量氫氧化鈉溶液中生成的離子，在電場作用下向負極移動

Which one is different from the others according to places of articulation?

A

[n]

B

[m]

C

[b]

D

[p]

What rhetorical device is used in the sentence: The duties of a soldier are to protect his country and peel potatoes.

A

Anticlimax

B

Pun

C

Metaphor

D

Transferred epithet

What is the major cause for Europeans’ loss of sleep?

A

The daylight savings time.

B

The colorful night life.

C

The World Cup.

D

The summertime.

What is the most probable reason for some rich people to use a device to record their patterns?

A

They have trouble falling asleep.

B

They want to get sufficient sleep.

C

They are involved in a sleep research.

D

They want to go to bed on regular hours.

實驗室用高錳酸鉀加熱制取氧氣主要有以下步聚：

a．加熱盛有藥品的試管；

b．向試管中加入藥品；

c．檢查裝置的氣密性；

d．用排水法收集氣體；

e．停止加熱；

f．將導氣管從水槽中取出

正確的操作順序是（）。

A

cbadef

B

dacfbe

C

badcfe

D

cbadfe