Much new high technology has been introduced from America, ________ a great increase in the production of the company.
| A．resulting in | B．having led to | C．contributed to | D．caused |
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5.The growing speed of a plant is influenced by a number of factors, _______ are beyond our control.
| A．most of them | B．most of which |
| C．most of what | D．most of that |
4.Occasions are quite rare ______ I have the time to spend a day with the kids.
| A．who | B．which | C．why | D．when |
3.The man pulled out a gold watch, __________ were made of small diamonds.
4.
| A．the hands of whom | B．whom the hands of |
| C．which the hands of | D．the hands of which |
1.By nine o'clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ___________ appeared a rare rainbow soon.
2.
| A．of which | B．on which | C．from which | D．above which |
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