Compared with normal mice, mice immunized with antigens for many times have the larger and heavier spleens because of ( ). A: proliferation of antigen specific T cells B: proliferation of antigen specific B cells C: proliferation of antigen specific T and B cells D: proliferation of antigen non-specific T and B cells

Does a proliferation of something refer to a              (  )

Does a proliferation of something refer to a ( ) A: small B: large increase?

The proponents of free trade on a global scale have hailed the proliferation of regional trade agreements.

The dispute between North Korea and the United States is mainly on ______ A: the US's atomic attack against North Korea B: North Korea's plan to develop a nuclear project C: the worldwide proliferation of nuclear weapons D: Iraqi possible proliferation of nuclear weapons

The past two years have seen a ________ of TV channels. A: integration B: distribution C: declination D: proliferation

Final host refers to the host at which stage the parasite lives () A: the larvae B: adult C: Asexual reproduction D: Sexual reproduction E: Larval proliferation

The functions of the spleen don’t include:() A: Elimination of aging blood cells B: Immune reaction C: Production of plasma cells D: Proliferation of lymphocytes E: Differentiation and development of lymphoid hematopoietic stem cells

The function of immunological defense refers to ( ). A: prevent pathogenic microorganisms invading the body B: inhibit the proliferation and spread of pathogenic microorganisms in the body C: clear the old, dead, or damaged cells in the body D: remove pathogenic microorganisms and their products from the body

What did the invention of the World Wide Web lead to/ A: It led to an innovative way of thinking and working. B: It led to the proliferation of new applications, which were no longer limited to enterprise-related activities but digitized almost any activity in our lives. C: It led to a new era for new media. D: It led to a new era for creation.