Fast food and sedentary life lead to the increasing rate of （）.

单项选择题No computer can（）the complex functions of the human brain.

A.imitate
B.immigrate
C.intimidate
D.Intimate

单项选择题Senior citizens want a more comfortable and （）future.

A.secure
B.violent
C.magnificent
D.possessive

单项选择题I looked forward to the （）of their theories.

A.exploitation
B.extinguisher
C.exploration
D.expense

单项选择题Our challenge is to（）those voters and inspire them to join our cause.

A.demonstrate
B.imitate
C.motivate
D.illustrate

单项选择题Forests provides （）materials for human activities.

A.crude
B.coarse
C.rough
D.raw