我国证券市场上流通的证券种类主要有股票、债券、投资基金份额、认股权证、期货和应收票据等。()
查看答案
抗渗混凝土(impermeable concrete) 名词解释
According to the passage, which of the following is one of the "tend-and-befriend" behaviors？
A. Quarrel with other family members.
B. Travel alone to other countries.
C. Give a hand to other people.
D. Care about the children.
(汉译英)听说可以上大学，他心里充满了喜悦和激动。
微信支付 
支付宝支付