共用题干 Many teachers believe that the responsibilities for learning lie with the student._________(51) a long reading assignment is given,instructors expect students to be familiar with the_________(52) in the reading even if they do not discuss it in class or take an examination.The__________(53) student is considered to be one who is motivated(激励)to learn for the sake of_________(54),not the one interested only in getting high grades.Sometimes homework is returned________(55)brief written comments but without a grade.Even if a grade is not given,the student is_________(56) for learning the material assigned.When research is________(57),the professor expects the student to take it actively and to complete it with minimum guidance.It is the_________(58)responsibility to find books, magazines,and articles in the library.Professors do not have the time to explain _________(59)a university library works;they expect students,______(60)graduate students,to be able to exhaust the reference sources in the library.Professors will help students who need it,but_________(61)that their students should not be too dependent on them. In the United States professors have many other duties________(62)teaching,such as administrative or research work.________(63),the time that a professor can spend with student outside of class is_________(64).If a student has problems with classroom work,the student should either approach a professor during office hour_________(65)make an appointment.
A. _________(65)A:or
B. and
C. for
D. but
E. but
单选题She shows little regard for the feelings of others and does exactly what she wants go.
查看答案单选题The leaves have been swept into huge heaps.
查看答案单选题We are facing both promising opportunities and grave challenges.
查看答案单选题It is irritating to be forced to listen to such silly conversation.
查看答案单选题He was acquitted on charges of assault with a deadly weapon.
查看答案单选题He lacked the strength to deal with all these problems.
查看答案单选题They fear it could have an adverse effect on global financial markets.
查看答案单选题共用题干 第二篇<br><br>Bone Marrow Transplantation<br><br>Bone marrow is the spongy tissue inside some of your bones,such as your hip and thigh bones. It contains immature cells,called stem cells.The stem cells can develop into the red blood cells that carry oxygen through your body,the white blood cells that fight infections,and the platelets that help with blood clotting.<br>If there is a problem with your bone marrow,a transplant can give you healthy new marrow. You could need a transplant because of a disease,such as bone marrow diseases or cancers like leukemia kemia or lymphoma.Or you might need one if a strong cancer treatment kills your healthy blood cells.<br>People with cancer sometimes donate bone marrow before treatment to be transplanted later. But often the new marrow comes from a donor,either a close family member or someone unrelated.<br>The healthy cells for a transplant can come from three sources:bone marrow;peripheral (circulating) blood that has an increased number of healthy blood-forming cells(also called peripheral blood stem cells or PBSC);umbilical cord blood that is collected after a baby is born.<br>If you need an allogeneic transplant,your doctor will look for a marrow donor or cord blood unit that matches your HLA tissue type.HLA stands for human leukocyte antigen,a markei your immune system uses to recognize which cells belong in your body and which do not.<br>Before your body can receive the healthy cells,the diseased cells must be destroyed.This is done using chemotherapy and sometimes radiation. The destruction of diseased cells is called a preparative regimen or a conditioning regimen.<br>On the day of transplant,the cells from the marrow donor or cord blood unit are infused intravenously(go into your body through a large vein).These healthy cells move into the spaces inside your bones where they create new marrow. They grow and make healthy new red blood cells,white blood cells,and platelets.
查看答案单选题We are restricted to a speed of 30 miles an hour in built-up areas.
查看答案单选题He often mocks my French accent.
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