While the development of the suburbs has created problems, it has also provided ____ modern housing for millions of people. ?xml:namespace>A) excessive B) immense C) memorable D) substantial
A. excessive
B. immense
C. memorable
D. substantial?xml:namespace>
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Hunger could be his only for killing a living thing.A) sensation B) cause C) purpose D) motive?xml:namespace>
A. sensation
B. cause
C. purpose
D. motive
下列化合物在酸性的条件下,与丙醇进行酯交换反应速率由快到慢的顺序是 ( )①乙酸甲酯 ②乙酸乙酯 ③乙酸丁酯
A. 132
B. 321
C. 123
D. 231