Which body system will be suffered the most severely damage by ozone？ （）

A、CCPIT

B、China Customs

C、Ministry of Commerce

D、CCIC

A．Immunity can protect our body from disease

B．Only microbes can induce immune system to produce immunity

C．Animal serum can stimulate human immune system to produce immunity

D．All immunities are benefit to our body

E．Baby can get immunity from mother

A、Internet

B、Body language

C、Sound system

D、Written signs

A、portal-mesenteric vein system

B、intrahepatic bile duct

C、lung

D、colon

E、small intestine

Which of the following is true according to the passage？

A．When the body part comes from the same species, the recipient"s immune system will accept it with no rejection.

B．There is little concern about pig-to-human donation because it"s comparatively safe to live with a pig.

C．Proviruses could make the body produce more infectious viruses when they are transplanted into human beings.

D．Recipients of xenotransplantation will live a more healthy life because their immune system will be perfected.

A、lung

B、small intestine

C、intrahepatic bile duct

D、colon

E、portal-mesenteric vein system

Which of the following best expresses the main idea of this passage？

A.An antigen is any substance that triggers an immune response

B.One of the immune system's primary functions is the allergic response

C.The human body is an appropriate habitat for microbes

D.The basic function of the immune system is to distinguish between self and nonself

[A]behind

[B]alone

[C]out

[D]aside

A、惯性轴系 Inertial Axes System

B、地轴系 Earth-Fixed Axes System

C、导航轴系 Navigational System

D、基础体轴系 Basic Body Axes System

E、稳定轴系 Stability Axes System

F、风轴系 Wind Axes System

A．It includes nerve cell and neuroglial cell

B．It can be divided into unipolar neuron and multipolar neuron

C．It possesses a cell body and two types of processes

D．It is only located in the peripheral nervous system

E．It only has function of conduction