下列说法正确的是
A．1 mol阿司匹林（ ）与足量的NaOH溶液反应，消耗NaOH最大的物质的量为2mol |
| B．汽油、柴油等矿物油与植物油主要成分都是烃，均可以萃取溴水中的溴 |
| C．丙氨酸和苯丙氨酸脱水，最多可生成4种二肽 |
D．按系统命名法，化合物 的名称为2甲基5异丙基庚烷 |
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |
The children loved their day trip, and they enjoyed the horse ride ______.
| A．most | B．more | C．less | D．little |
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |