A.person | B.member | C.character | D.figure |
A.And at that moment, the adventure begins. |
B.Otherworld Adventure Weekend starts in much the same way. |
C.They are the same people who welcomed you and helped you unload bags. |
D.Maybe some of the local people would talk to you, telling you about nearby attractions. . |
A.Use body language to show your confidence. |
B.On the contrary,bad manners and uneasy behavior can make a wrong first impression born. |
C.Arriving early is the first step in creating a good impression. |
D.Present a positive attitude,even in the face of criticism(责备)or in the case of nervousness. |
Title | More Models of Hydrogen Cars Being Tested |
The progress of hydrogen fuel cell | ·小题1:________ by Sir William Grove in 1839. ·Designed 小题2:________ ever since. ·Used in Apollo spaceships in the twentieth century. |
Operating principle of P.E.M. | ·It has two sides divided by a thin membrane. ·Hydrogen gas from one side 小题3:________ the active metal platinum. ·The electrons are 小题4:________ from the protons in the hydrogen atoms. ·The protons pass through the fuel cell to the other side. ·Oxygen from the air is小题5:________ into the other side of the fuel cell. ·The gas meets the protons,and then water and heat are小题6: ________ |
Reasons for slow 小题7:___________ of hydrogen fuel cell cars | ·There are many technical problems小题8: ________ ·The durability of the membranes in P.E.M. fuel cells is not clear. ·They have to start easily at 小题9:________ temperatures and in dry climates. ·They must be smaller and less costly before 小题10:________ gasoline engines. |
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