题目:
下图为“世界经纬网示意图”,读图回答下列问题。
图中ABCDE各点自转线速度由大到小的排列是()。
答案:
参考答案:C>A=B>D=E
解析:
地球自转线速度自赤道向两极逐渐减小,比较四地的纬度差异可知。
下图为“世界经纬网示意图”,读图回答下列问题。
图中ABCDE各点自转线速度由大到小的排列是()。
参考答案:C>A=B>D=E
解析:
地球自转线速度自赤道向两极逐渐减小,比较四地的纬度差异可知。
某患者,28岁,已婚,停经8周,阵发下腹痛伴 * * 出血1天,出血多于月经量,色鲜红,妇科检查:宫口松,可容1指,子宫如孕50天大小,质软,偶有收缩感,最可能的诊断是 ( )
A.先兆流产
B.难免流产
C.不全流产
D.稽留流产
看图完成对话。
A: What 1.____ you 2.____ 3.____ the tree?
B: I can see some 4.____.
A: What are they doing?
B: They are 5.____.
下列事实一般不能用于判断金属性强弱的是( )
A.金属的颜色和熔沸点
B.金属元素的最高价氧化物对应的水化物的碱性强弱
C.1mo金属单质在反应中失去电子的多少
D.金属元素的单质和水或酸置换出氢的难易
患者女,33岁,因“体检发现血红蛋白增高4年”来诊。实验室检查:白细胞10.48×109/L,红细胞6.80×1012/L,血红蛋白181g/L,血细胞比容0.57,血小板363×109/L。
应做的检查有()
A.骨髓活检
B.JAK2V617F基因突变
C.血清促红细胞生成素(sEPO)测定
D.肝、脾和心脏超声
E.骨髓细胞体外±EPO红系爆式集落形成单位(BFU-E)和红细胞集落形成单位(CFU-E)
F.动脉血氧饱和度
G.血清维生素B12
H.中性粒细胞碱性磷酸酶
阅读下面短文,根据所读内容在表格中的空白处填入恰当的单词。注意:每个空格只填一个单词。 | ||||||||
Few Americans stay in one a place for a lifetime. We move from the city to the suburbs (郊区), from high school to college in a different state, from a job in one area to a better job elsewhere, from the home where we raise our children to the home where we plan to live in retirement. With each move we are forever making new friends, who become part of our new life. For many of us the summer is a special time for forming new friendships. Today, millions of Americans go on vacation abroad, and we go not only to see new sights but also in those places where we don't feel too strange with the hope of meeting new people. No one really expects a vacation trip to produce a close friend, but the beginning of a friendship is possible. Surely in every country people value friendship. The word "friend" to American people can be applied to a wide range of relationships-to someone one has known for a few weeks in a new place, to a close business companion, to a childhood playmate, to a man or a woman, or to a trusted colleague. There are real differences among these relations for Americans a friendship may be shallow, casual, situational or deep and lasting. But to a European, who sees only our surface behavior, the differences are not clear. As Europeans see it, all kinds of "friends" flow in and out of Americans' homes with little ceremony. They may be parents of the children's friends, house guests of neighbors, members of a committee, business associates from another town or even another country. Coming as a guest into an American home, the European visitor finds no obvious landmarks. The atmosphere is relaxed. Most people, old and young, are called by first names. Americans' characteristic openness to different styles of relationship makes it possible for us to find new friends abroad with whom we feel at home. | ||||||||
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