【单选题】The students busily when Miss Brown went to get the book she in the office.
D.
were writing; had left
【单选题】以下不是半导体应变式传感器的优点。( )
【单选题】以税收与价格的关系为标准,可以讲税收分为( )
【单选题】题3-1-1 以下不是半导体材料的是:。
【单选题】Why is Ms. Ross sending an e-mail?
A.
She received defective products.
B.
The store sent a wrong item.
C.
The bill was charged incorrectly.
D.
The delivery arrived too late.