有利差异是指因实际成本低于标准成本而形成的节约差，有利差异越大越好。 ( )

阅读理解。

     It is Sunday afternoon. Mary goes to do the shopping with her mother. Her mother wants to buy some

food for supper. Mary wants to buy a new skirt and some school things. They cone to a shop.

    "What does your shop sell?" Mary asks, "A lot of thins. "The girl in the shop says. "You can buy food,

drink, clothes in our shop and school things, too." Mary and her mother go in. There are many people in the

shop. Mary finds a nice white skirt.

    "How much is the skirt?" Mary asks the girl in the shop.

    "It's eighty yuan."

    "That's too dear. Can I find a cheap one?"

    "What about the green one? It looks nice. And it's only thirty yuan."

    "Ok, thanks a lot."

    "You are welcome."

    After that, Mary buys some school things, too. Her mother buys a lot of food, like bread, cakes, meat and

fish. They get home very late.

1. Mary goes to do the shopping with her mother on _______.

A. Saturday afternoon

B. Saturday morning

C. Sunday morning

D. Sunday afternoon

2. Mary wants to buy a new skirt and _______.

A. some food

B. some drinks

C. some clothes

D. some school things

3. The white skirt is _______.

A. ￥30

B. ￥110

C. ￥80

D. ￥100

4. Mary buys a _______ skirt.

A. white

B. green

C. red

D. dear

5. The green skirt is _______.

A. nice but dear

B. nice and cheap

C. not nice but cheap

D. not nice or cheap

显微镜的使用中有四个步骤，分别是：______、______、______、______．

汤显祖《牡丹亭》中的故事是发生在江西省现在的( )县。

A．大余

B．临川

C．吉安

D．九江

在治疗贫血用铁制剂时不能过早停用，在血红蛋白恢复正常后，应再继续服用小剂量铁剂多长时间

A.3～6天

B.3～6周

C.3～6个月

D.3～6年

某慢性肾衰竭病人，有厌食、恶心、口臭、失眠、皮肤瘙痒，以下护理计划中哪项内容正确

A．给予低热量饮食
B．每日口腔护理1次
C．勤川温水擦洗皮肤
D．病室光线充足
E．晚间睡前不宜饮水