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【单选题】
(2019•新课标II卷) “春蚕到死丝方尽,蜡炬成灰泪始干”是唐代诗人的著名诗句,下列关于该诗句中所涉及物质的说法错误的是( )A.
蚕丝的主要成分是蛋白质
B.
蚕丝属于天然高分子材料
C.
“蜡炬成灰”过程中发生了氧化反应
D.
古代的蜡是高级脂肪酸酯,属于高分子聚合物
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【单选题】某印染厂上报的统计资料显示新鲜工业用水 0 . 8 万吨,但水费单显示新鲜工业用水 1 万吨,无监测排水流量,去排污系数 0 . 7 ,其工业废水排放 ( ) 万吨。
A.
1 . 26
B.
0 . 70
C.
0 . 75
D.
0 . 56
【单选题】Jane said to Mary, 'What are you going to do tomorrow?' Jane asked Mary ___________. [ ]
A.
what was she going to do the next day
B.
what she was going to do tomorrow
C.
what she was going to do the next day
D.
what was she going to do tomorrow
【简答题】问题配对。 ( )1. What is that? ( )2. How old is Mary? ( )3. What can you hear? ( )4. What color are the flowers? ( )5. What do you like? ( )6. What are these? ( )7. Who's she? (...
【简答题】用方框中单词的适当形式填空。 am you his your her is Tom: What's 1. name? Mary: My name 2. Mary. Tom: I 3. Tom. Mary: Nice to meet 4. , Tom. Tom: Nice to meet you, too. Mary: Oh, what's 5. name? Tom: Hi...
【简答题】为问句选择合适的答语。 ( ) 1. Is Mike drawing pictures? ( ) 2. What's he doing? ( ) 3. What are they doing? ( ) 4. When's your birthday? ( ) 5. Do you like spring? A. He's writing a letter. B...
【单选题】What was Mary doing?
A.
She was taking a walk in a park.
B.
She was waiting for a bus to go to a park.
C.
She was waiting for Bill.
D.
She was waiting for a bus to go home.
【判断题】对一个双床间而言,国际上流行的开间为3.6-4.2米,进深为7.6-10米。酒店客房净高通常为2.7米以上,净高与开间所形成的比例为1.44-1.68,是接近黄金分割的矩形剖面比例,利于形成亲切、舒适的客房空间气氛。
A.
正确
B.
错误
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