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试述甘草粉末特征?

答案

参考答案:

粉末:淡棕黄色。①纤维成束,直径8~14μm,壁厚;晶鞘纤维易察见,草酸钙方晶大至30μm。②具缘纹孔导管较大,直径至160μm,稀有网纹导管。③木栓细胞多角形或长方形,红棕色。④淀粉粒多为单粒,卵圆形或椭圆形,长3~12~20μm,脐点点状。⑤棕色块状物,形状不一。

阅读理解

阅读理解。

    Mr. Gao lives in a town. When he was twenty-five, his son was born (出生). He called

him Gao Ling. The little boy is very clever and his parents love him very much.

    It's September 1 today. A new school year begins. Gao Ling is happy and wears his most

beautiful clothes. He's going to school with his new bag.

    "Let me take you to school today, dear," says Mrs. Gao.

    "Thank you, Mum." says the boy. "The school is not far from here. I can walk there

myself."

    At school a teacher meets the little boy and asks,"What's your name, my little friend?"

    "Gao Ling, sir." answers the boy.

    "How old are you?"

    "Six, sir."

    "What's your father's name?"

    "Gao Dalin, sir."

    "How old is he?"

    "He's six too, sir."

    "Oh," he says in surprise. "Is he as old as (一样大) you?"

    "Yes, sir,"says the boy. "He became (成为) a father at the time when I was born."

1. Mr. Gao is _____ now. [ ]

A. six

B. twenty-six

C. thirty-one

D. thirty-five

2. Mr. and Mrs. Gao love their son because _____. [ ]

A. he is clever

B. he likes to go to school

C. he can go to school himself

D. he can answer their questions

3. Gao Ling is in Grade _____ now. [ ]

A. One

B. Two

C. Five

D. Six

4. Gao Ling goes to school _____. [ ]

A. by car

B. on foot

C. by train

D. by bike

5. Gao Ling thinks _____. [ ]

A. his father and he were born on the same day

B. his father is younger than he

C. his father forgets to tell him about his age

D. He became a father six years ago

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