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【单选题】
我国土壤的pH一般变动范围在()。A.
4-9
B.
4、5-8、5
C.
2-7
D.
4-7
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【简答题】When we talk about getting online, we mean being connected to the Internet---a giant network of computers that connects people and information all over the world. The Internet has a lot in common with...
【单选题】The Internet allows us to transmit messages across the world in an instant.
A.
type
B.
convey
C.
send
D.
phone
【单选题】The Internet allows rural school children about what is happening in the world .
A.
to learn
B.
learning
C.
learn
D.
learned
【单选题】The Internet allows rural school children about what is happening in the world.
A.
to learn
B.
learning
C.
learn
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