下面关于直肠解剖的论述，正确的是（）。

A.直肠是直的，故称直肠

B.直肠在腹腔之外

C.直肠起源于内胚层

D.直肠全长约15cm

E.直肠下方终于肛管

When I was a boy, every holiday I had seemed wonderful. My   36  took me by train or by car to a hotel by the   37 . All day I   38  on the sands（沙滩） with strange   39  children. We made houses and gardens, and   40  the tide（潮汐） destroy them. When the tide went out, we   41  over the rocks and looked down at the fish in the rock-pools.

In those days the   42  seemed to shine always brightly   43  the water was always warm. Sometimes we left beach and walked in the country, 44  ruined houses and dark woods and climbing trees. There were   45 in one’s pockets or good places where we could   46  ice creams. Each day was very happy.

Although I am now thirty-five years old, my idea of a good   47  is much the same as it was. I   48  like the sun and warm sand and the sound of   49  beating the rocks. I no longer wish to   50  any sand house or sand garden, and I dislike sweets.   51 , I love the sea and often feel sand running through my fingers.

Sometimes I   52  what my ideal (理想的) holiday will be like when I am   53 . All I want to do then, perhaps, will be to lie in bed, reading books about   54  who make houses and gardens with sands, 55  watch the incoming tide…

小题1:

A．teacher

B．parents

C．nurse

D．younger sister小题2:

A．sea

B．lake

C．mountain

D．river小题3:

A．played

B．slept

C．sat

D．stood小题4:

A．moving

B．excited

C．angry

D．nervous小题5:

A．made

B．brought

C．watched

D．heard小题6:

A．rolled

B．looked

C．turned

D．climbed小题7:

A．light

B．sun

C．moon

D．lamp小题8:

A．and

B．yet

C．but

D．or小题9:

A．exploring

B．examining

C．repairing

D．measuring小题10:

A．sweets

B．sand

C．ice-creams

D．money小题11:

A．make

B．sell

C．buy

D．offer小题12:

A．house

B．holiday

C．garden

D．tide小题13:

A．hardly

B．almost

C．still

D．perhaps小题14:

A．waves

B．wind

C．hands

D．feet小题15:

A．destroy

B．fix

C．use

D．build小题16:

A．But

B．However

C．Otherwise

D．Besides小题17:

A．wonder

B．feel

C．understand

D．believe小题18:

A．strong

B．weak

C．young

D．old小题19:

A．children

B．boys

C．girls

D．grown-ups小题20:

A．that

B．which

C．whom

D．who