皮皮学，免费搜题
登录
搜题
【单选题】
Tom had to be told two or three times ________ he could remember what the teacher said.A．beforeBA.
23. Tom had to be told two or three times ________ he could remember what the teacher said. A．before
B.
when
C.
until
D.
As
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Would you please tell me ________? [ ]
A.
when did he come home
B.
where he would play football
C.
if he had seen the film
D.
why he didn’t watch the
【单选题】Would you please tell me_____? I’d like to visit you sometime next week.
A.
where he comes from
B.
where you live
C.
where do you live.
【单选题】数据库系统中的三级模式以及模式间的映像提供了数据的独立性。下列关于两级映像的说法，正确的是（ ）
A.
外模式到模式的映像是由应用程序实现的，模式到内模式的映像是由DBMS实现的
B.
外模式到模式的映像是由DBMS实现的，模式到内模式的映像是由应用程序实现的
C.
外模式到模式的映像以及模式到内模式的映像都是由DBMS实现的
D.
外模式到模式的映像以及模式到内模式的映像都是由应用程序实现
【单选题】I wonder if he_____this evening.If he comes,would you please call me?
A.
is coming
B.
.comes
C.
.would come
D.
.has come
【单选题】Would you please give him the message the moment he ____?
A.
arrives
B.
arrived
C.
is arriving
D.
will arrive.
相关题目：