Riding bicycles can save energy.

[问答题]Riding bicycles can save energy.

[问答题]It is well known that coal is an important source of energy.

[单选题]Teaching, a test of ___________, intelligence, and teamwork skills, require

[单选题]H．ow much money can an adult save if she/he takes the coach service instead of taxi to the city? .(A) 12 Australian dollars(B) 6 Australian dollars(C) 3 Australian dollars(D) 4 dollars and 50 cents

[单选题]We can use energy from the sun because ______.

[单选题]Re-handling can save cost and improve service, Is it true or not? （）A . WrongB . Not total trueC . TrueD . Not clear here

[单选题]To conserve energy, estate developers are encouraged to build houses that c

[单选题]When considered in terms of ton-miles or toune-kilometers hauled perunit of

[单选题]The factory ______ 20,000 bicycles a month.A． turns intoB． turns upC． turns inD． turns out

[单选题]10． We had fun ___________ our bicycles to the beach last Sunday．A．to rideB．ridingC．rideD．to riding