The best title for the text may be
A．We Can Live Longer in the 21st Century.
B．Cancer Can Be Conquered Soon.
C．The Final Frontier of the 21st Century.
D．Scientific Breakthroughs of the 21st Century.

未分类题实质性测试有()基本类型。

判断题在排水较困难的挖方和填方路段，只须采用相应的隔离层措施即可解决问题。()

未分类题The author and his colleagues cognitive tests proved thatA．the children were more skillful in all aspects.B．the children were not the same as the apes in dealing with the material world.C．the children performed better only in social skills.D．the apes were better in the physical world.

判断题我国公路自然区划的一级区划是按自然气候、全国轮廓性、地理、地貌、各地方的年降雨量划分的。()

未分类题It can be inferred that cracking the genetic code and conquering cancer are related becauseA．the latter can be achieved based on the knowledge of the former.B．the latter can prove the existence of the former.C．the former reverses the process of the latter.D．the former generates the therapeutic viruses for the latter.