Sometimes a ____________ of ants will hollow out a tree trunk leaving just the bark.
A. swarmB. packC. herdD. colony
They lost their way in the forest, and _______ make matters worse was night began to fall.
A. thatB. itC. whatD. which
Sleep and cows were two of the most important animals to be ______________.
A. spawnedB. domesticatedC. slaughteredD. constituted
A. 看见B. 吃饭C. 海洋D. 参议院
What began as an isolated outbreak of flu has now developed into a countrywide _________.
A. phobiaB. epidemicC. toxinD. contamination
A 59-year-old man was executed by ____________ injection this morning.
A. lethalB. inherentC. animateD. fertile
It________ years since we got to know each other.
A. Has had B. has beenC. hasD. was
A. 昆虫B. 熊C. 雪松D. 白杨
A. 哭泣B. 野草C. 湿的D. 打扫
A. 厘米B. 意大利面C. 困境D. 删除
A. 获得B. 谷物C. 再一次D. 下雨
A. 家具B. 幸运的C. 堡垒D. 不幸的
A. 面具B. 提问C. 带着D. 任务
Some creatures were better at surviving and ______________ themselves than others, so they thrived at the other’s expense.
A. adoptingB. subsistingC. reproducingD. germinating
By the end of this month we surely ________ a satisfactory solution to the problem.
A. have foundB. will have foundC. will be findingD. are finding
The mountain________ with snow all the year around.
A. coversB. coveredC. is coveredD. were covered
A. 区域 B. 缩放C. 房间D. 动物园
A. 土豆B. 文具C. 郁闷D. 郁金香
Don’t be so __________ to me. I am here not to quarrel with you but to explain the whole matter to you.
A. suspiciousB. hostileC. angryD. hospitable
A. 站立B. 喷，洒C. 疲劳D. 拨动，动