Paragraph 4 __________ 查看材料
A.Intel International Science and Engineering Fair
B.The enthusiasm for solving problems
C.The young researchers" passion
D.An invention increasing pedal power
E.Why people avoid biking in Pittsburgh
F.The cause of national disaster
第1题
A.a nearly 40-degree angle
B.get on bikes
C.a feather pillow
D.fix more problems
E.a super-strong battery
F.benefit their community
第2题
A.a nearly 40-degree angle
B.get on bikes
C.a feather pillow
D.fix more problems
E.a super-strong battery
F.benefit their community
第3题
A.a nearly 40-degree angle
B.get on bikes
C.a feather pillow
D.fix more problems
E.a super-strong battery
F.benefit their community
第4题
A.a nearly 40-degree angle
B.get on bikes
C.a feather pillow
D.fix more problems
E.a super-strong battery
F.benefit their community
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