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【单选题】
What is Sidney's most distinctive character according to the passage?A.
It' s a harbor city.
B.
It has a wealth of natural beauty.
C.
It has some famous constructions.
D.
It is the largest city in Australia.
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举一反三
【单选题】Both longitude and latitude ______ in degrees, minutes and seconds.
A.
measurin
B.
measured
C.
are measured
D.
being measured
【简答题】往含有Cu2+、Fe3+和Mg2+(浓度均为0．1 mol/L)的溶液中加入过量铁粉，充分反应后，溶液中浓度最大的阳离子是 ．
【简答题】计算e的近似值 任务描述:使用泰勒级数展开式来求自然对数的底的近似值,泰勒级数展开式如下:设N=20。 任务分析,程序中利用循环求e的值,当N为20时则退出循环。程序运行后,可以显示e的近似值2.71828。
【单选题】下列溶液中微粒的物质的量浓度关系正确的是（ ）
A.
在FeCl 3 溶液中加入Mg（OH） 2 固体，溶液中c（Fe 3+ ）下降
B.
CH 3 COOH溶液加水稀释后，恢复至原温度，溶液中c（OH - ）和Kw都增大
C.
0.1 mol/L Na 2 CO 3 溶液：c（OH - ）=c（HCO 3 - ）+c（H 2 CO 3 ）+c（H + ）
D.
常温下，向0.01 mol/L NH 4 HSO 4 溶液中滴加NaOH溶液至中性：c （Na + ）＞c（NH 4 + ）＞c（SO 4 2- ）＞c（OH - ）=c（H + ）
【单选题】Both longitude and latitude ______ in degrees, minutes and seconds.
A.
measuring
B.
measured
C.
are measured
D.
being measured
【简答题】请用适当的词完成下面的短文,并把所缺单词填写在指定的位置上,每个空只能填写一个形式正确,意义相符的单词。 Almost everyone in the world has friends.How can we make our friendship last forever? In my opinion, it's nice to have1.____because we can talk, la...
【简答题】用方框中所给单词或短语的适当形式填空 happy, proud, laugh at, stay in touch, try one's best, wake up 1.They all ____________ to study hard in order to go to college one day. 2.My neighbour is moving away, but I hope tha...
【简答题】单词拼写。 l. In China, people _____ (握手) when they meet. 2. It's not polite to _____ (顺便拜访) a friend's home. 3. Don't talk to him like that. He's a child ____ (毕竟). 4. I'm gradually _____ (习惯于) the table...
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