【名词&注释】
青藏高原(tibetan plateau)、正方形(square)、应对气候变化(addressing climate change)、化学变化(chemical change)、负责任(be responsible)、发展速度、近年来(recently)
[单选题]如果在一个顶点周围用两个正方形和n个正三角形恰好可以进行平面镶嵌，则n的值是（ ）．
A. 3
B. 4
C. 5
D. 6
查看答案&解析
举一反三：
[单选题]BTom lived a long way from the town．One day he went into the town to buy something in a shop，and after he bought it，he went into a restaurant and sat down at a table． When he looked round，he saw some old people put glasses on before reading their books，so after lunch he went to a shop to buy glasses，too． He walked along the road，and soon found a shop．The man in the shop made him try on a lot of glasses，but each time Tom said，"No，l can't read with this pair． "The man became more and more puzzled． At last he said，"Excuse me，but can you read at all?"No，l can't!"Tom said，"lf I can read，do you think I will come here to buy glasses?"
A. Tom saw some old people _______'
B. far away from the town
C. in a shop
D. in a restaurant
E. in the village
[单选题]15．
A. happened
B. solved
C. realized
D. found
[单选题]一月份我国气温最低的地方是：
A. 青藏高原
B. 漠河
C. 曾母暗沙
D. 新疆北部
[单选题]17．_________they may not succeed，they will try their best．
A. Though
B. When
C. Because
D. Unless
[单选题]Are you going to borrow a dictionary or a magazine ? -- ____.
A. Yes, a dictionary
B. No, a magazine
C. A dictionary
D. Yes, both
[单选题]中国是最早制定实施《应对气候变化国家方案》的发展中国家，也是近年来(recently)节能减排力度最大的国家。这表明我国
A. 承担了一切国际义务
B. 是一个和平、合作、负责任的国家
C. 有能力独自解决人类面临的所有问题
D. 是世界上发展速度最快的国家
[单选题]Helen loves to talk about travel. She _____ many places.
A. has gone to
B. has been to
C. has gone for
D. has been from
[单选题]下列变化属于化学变化的是（ ）
A. 水汽化 B． 水结冰
B. 水沸腾
C. 水分解
[单选题]Dannydidallkindsofthingstomakethebaby______.
A. tostopcrying
B. stopcrying
C. tostoptocry
D. stoptocry
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