单项选择题

INSTINCT:

A． hesitation
B． unachievable goal
C． illogical anxiety
D． acquired response
E． illusion
<上一题 目录 下一题>
热门 试题

单项选择题
It can be inferred from the passage that Van West notes the severe droughts which affected the Anasazi prior to the Great Drought primarily in order to
A． establish that enough food could have been grown to support the Anasazi's survival
B． argue that the Anasazi's past behavior would indicate their likely future behavior in the case of a Great Drought
C． suggest that the repetition of droughts was taking a cumulative toll on the fertility of the Plateau
D． argue that the evidence which points to the existence of a Great Drought may actually be related to earlier droughts
E． affirm the notion that the Great Drought may have been exponentially more severe than prior droughts
单项选择题
According to the passage, astronomers studying Martian meteors discovered on Earth were perplexed by them for which of the following reasons
A． The meteors found on Earth were too young to have originated from the impacts in question.
B． The meteors found on Earth were too old to be easily dated.
C． Not enough impact events have been recorded in recent history to explain how any young meteors would have reached the Earth.
D． Impacts on Mars have been so small that scientists question how any meteors have reached the earth.
E． The age distribution of meteors found on Earth was inexplicably based toward youth.
相关试题