更多"Bone and ivory are light, strong, a"的相关试题:
[单项选择]Bone and ivory are light, strong, and accessible materials for Inuit artists.
A. distinctive
B. economical
C. available
D. optional
[单项选择]A decade ago places like Ivory Coast and Equatorial Guinea were being largely ignored by the petroleum world majors for the following are reasons EXCEPT that ______.
A. the majors preferred the large oil sources like Negeria and Angola
B. the drilling sites of the large sources could be leased at a relatively low price
C. the petroleum potential of Ivory Coast and Equatorial Guinea has yet to be proved
D. the majors could not find the states in their oil map
[单项选择]Why did the African nations welcome an ivory ban
A. The rate of killing has been accelerating.
B. The US government forbids imports of both raw and finished ivory.
C. They realized that the killing of elephants is a serious threat to their tourist business.
D. African people advocated an ivory ban.
[单项选择]According to the text, the ivory-billed woodpecker _____.
A. is extinct since the year of 1994.
B. was found by a group of 17 researchers through the internet.
C. is called "Grail Bird" because it is hallowed to the degree of holiness.
D. is so famous that it has become a symbol of the spoiled relationship between human beings and nature.
[单项选择]What caused the ban to be put on ivory trade by the UN
A. Legal killing of elephants.
B. Illegal killing of elephants.
C. Conservation and community development projects.
D. Elephants facing extinction.
[单项选择]The passage implies that reversing the muscle-bone movement used to bend an arm requires______.
A. the relaxation of two sets of muscles
B. the use of different muscles
C. a different kind of tissue
D. the enlargement of the muscle
