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【单选题】
下列有关C 3 和C 4 植物的描述，不正确的是（）A.
C 3 植物在光合作用暗反应阶段，固定CO 2 形成两个三碳化合物
B.
常见的C 4 植物有高梁、玉米和甘蔗等
C.
C 3 植物植物叶片的维管束鞘细胞细胞不含叶绿体
D.
C 4 植物植物叶片的维管束鞘细胞细胞含有正常的叶绿体
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【简答题】将你生日的月份和日期写成十进制数,如:1998年7月21日,写作: 请你用格雷码和余3循环码分别对其进行表示。
【简答题】Mr. Smith gave his wife money every Friday evening. His wife always spent it all the next Wednesday, so that for the next three days she had no money to spend at all. One day Mr. Smith asked her, “But...
【多选题】运用感知规律促进直观教学的方式有()。
A.
根据学习任务的性质,灵活运用各种直观方式
B.
运用知觉的组织原则,突出直观对象的特点
C.
教会学生观察方法,养成良好的观察习惯
D.
让学生充分参与直观过程
【单选题】Margaret spent all the evening talking about her latest book ______ none of us had ever heard.
A.
that
B.
which
C.
of what
D.
of which
【简答题】My father is a smart man. He spent many years of his life listening to people’s arguments, first as assistant district lawyer and then as a judge. My dad knows rubbish rhetoric when he hears it. One o...
【单选题】He spent all evening talking about his latest book, which none of us had ever .
A.
heard
B.
heard from
C.
heard of
D.
listened to
【简答题】肋膈隐窝的位置、特点?
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