The problem ________ this material can be used in our factory has been solved.
|
A．that |
B．what |
C．whether |
D．why |
The first thing ________ I did was to see if there were any products ________ might help me, but there only seemed to be powders ________ to kill snakes.
|
A．that; /; designed |
B．which; that; designed |
|
C．/; that; designed |
D．/; which; design |
________ is very important in doing any scientific work.
|
A．Album |
B．Category |
C．Accuracy |
D．Assume |
All efforts of cloning an animal will be ________ if there is not enough diversity in the group to overcome illness.
|
A．in need |
B．in place |
C．in vain |
D．in case |
It was the building of the rail network from the west to the east coast ________ brought even larger numbers to California in the 1860s.
|
A．that |
B．what |
C．how |
D．which |
_______ from the top of the mountain, we found the city more beautiful.
|
A．Seen |
B．Having been seen |
C．Seeing |
D．Being seen |
