可用于制备缓控释制剂的亲水凝胶骨架材料是 A.羧甲基纤维素钠B.硬脂醇C.大豆

Without music, the world a dull place.___

A. will be

B. would have been

C. will have been

D. would be

Without petroleum human life ____quite different today.

A、is

B、will be

C、would have been

D、would be

The topic of the passage is ______.

A．What would life be like without memory

B．Memory is of vital importance to life

C．How is a person's memory different from an animal's or a computer's

D．What is contained in memory

Without the music, the children would have not had so much fun.

A．wouldn't be having

B．wouldn't have been

C．wouldn't be

D．wouldn't have had

Without the music, the children would have not had so much fun.

A．wouldn't be having

B．wouldn't have been

C．wouldn't be

D．wouldn't have had

According to the passage, life without television and radio would be ______.

A．essentially the same

B．very different

C．quite boring

D．spiritually more satisfying

Without the music, the children would have not had so much fun.

A．wouldn't be having

B．wouldn't have been

C．wouldn't be

D．wouldn't have had

The topic of the passage is:______

A．What would life be like without memory？

B．Memory is of vital importance to life.

C．How is a person' s memory different from an animal' s or a computer's？

D．What is contained in memory？