组成大分子链的链节在空间排列的几何形状有()和()两种。
参考答案:线型;网体型
She always does very well in the English exams. But she can _____understand Englishradio programs. [ ]
A. always
B. hardly
C. already
D. easily
在网银投资产品中,仅有贵金属代理提供()功能
A.网上开户
B.登记资金账户
C.重新登记资金账户
D.变更资金账户