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【简答题】

Hello! My name is Lisa, and I am a lioness. I live on the open grasslands of Africa with my family. Lions living in a group are called a pride.
My father is strong and powerful. He and his cousin are the leaders of our pride. The other members are my mother, her sisters, and their children.
The area where a pride lives is big! We roar (咆哮) to tell each other where we are and to warn strangers to stay away.
Meet my new baby brother. His name is Leon. See the spots on his fur? We lions are born spotted or striped (有条纹的). As we grow older, the spots gradually disappear.
Lionesses usually spend their entire lives with their birth pride, but Leon will leave when he is about three years old. He’ll run around with a male (雄性的) friend or relative for a few years until they take over a pride of their own.
But for now, we have lots of fun together. We often play and fight for hours, which can help us practice skills that we will need for hunting. )
We lions keep ourselves very clean. Just like a house cat, I clean my fur (毛with my tongue. We clean for each other, too, to show we’re friends.
Lions like to sleep for most of the day. We hunt in the cool evening. Female (雌性的) lions hunt more often than male lions. We work together as a team. At the right moment, we attack and kill our prey. Then we share it. Male lions usually eat first. Females eat next. Baby lions are the last to eat. The smallest one gets the least food.
Since we are full, it’s time to go to find a nice place for a sleep. Bye!
小题1:Lisa in this passage is the name of _____.A.a girlB.a male lionC.a female lionD.a pride小题2: According to the passage, Leon _____.A.hunts more often than his sisters B.will have spots on his fur for the whole of his lifeC.will leave his birth pride when he is about threeD.will take over his birth pride when his father dies小题3: The underlined word “prey” in the passage probably means _____.A.the animal that is huntedB.the animal that is erousC.the animal that is powerfulD.the animal that is ill小题4: The passage is written for _____.A.doctorsB.touristsC.childrenD.hunters

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题目标签:条纹
参考答案:
参考解析:
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【单选题】用裂隙灯显微镜观察角膜基质皱褶和条纹的方法正确的是()。

A.
宽裂隙背面投照法
B.
宽裂隙弥散投照法
C.
窄裂隙间接投照法
D.
窄裂隙直接投照法

【简答题】关于干涉与衍射条纹(  )

A.
干涉条纹一定呈现等间距,单缝衍射条纹一定呈现不等间距
B.
干涉条纹一定呈现不等间距,单缝衍射条纹可能呈现等间距
C.
干涉条纹可能呈现不等间距,单缝衍射条纹一定呈现不等间距
D.
干涉条纹可能呈现等间距,单缝衍射条纹也可能呈现等间距

【多选题】关于测量干涉条纹直径的操作,下列表述正确的是

A.
中心暗斑是零级暗纹,叉丝从中心向左侧移动,依次从1级暗环、2级暗环一直移动到15级暗环
B.
叉丝返回14级暗环开始记录其直径左侧坐标值,并依次记录13级一直到1级暗环的直径左侧坐标值
C.
叉丝越过中心暗斑,继续记录1级、2级一直到14级暗环右侧直径坐标值
D.
叉丝左右移动过程中都要数清暗环级数且避免中途反向移动叉丝引起回程差

【单选题】牛顿环干涉条纹的特点有()

A.
明暗相间,等间距的直条纹
B.
明暗相间, 等间距同心圆环
C.
明暗相间,随机性条纹
D.
明暗相间 , 内疏外密的同心圆环

【单选题】下列实验干涉条纹中哪一种属于等倾干涉条纹?

A.
牛顿环
B.
劈尖干涉
C.
均匀厚度的薄膜干涉
D.
杨氏双缝干涉

【单选题】单缝夫琅禾费衍射的衍射条纹,( )。

A.
各级明纹等宽度
B.
各级明纹等亮度
C.
级数越高条纹越窄
D.
级数越高条纹越暗