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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Today is a major milestone for Microsoft as our first Developers Conference here in China. The key partnerships we build with software developers around the world are central not only to the success o...
A.
efficient working mode
B.
sound decisions to be made
C.
smooth ways to be connected to other PCS
D.
removal of all the downsides of PCS
【单选题】The board deemed it’s urgent that these invitations ______ first thing tomorrow morning.
A.
had to be put in the mail
B.
must be put in the mail
C.
be put in the mail
D.
should have been put in the mail
【单选题】The sun rose upon a tranquil world, and beamed down upon the peaceful village like a benediction. Breakfast over, Aunt Polly had family worship: It began with a prayer built from the ground up of soli...
A.
Mary discouraged him constantly
B.
it was foggy outside
C.
he couldn’t focus his attention all the time
D.
he tried very hard to please the grownups