哪个不是颌下运动的基本形式A．开闭运动 B．前后运动 C．侧方运动 D．铰链运动 E

小明利用一未知焦距的凸透镜探究透镜的成像规律，进行了如下操作并得到了相关结论，请你将空缺部分补充完整。

⑴将一束平行光射向凸透镜，得到如图所示的光路图，则该透镜的焦距为__cm。（1分）

⑵将蜡烛、透镜和光屏放在光具座上，并使烛焰、透镜和光屏三者的中心大致在  (1分)

⑶按如图所示的方案进行实验和观察，并将观测情况记录在下表中。（每空1分，计5分）

⑷当烛焰从远处向透镜靠近时，仍要在光屏上得到清晰的像，光屏应向 (选填“靠近”或“远离”）透镜的方向移动。（1分）

⑸若在光屏上得到如图所示的图像，成像在光屏的左上角。若要通过调整透镜让像在光屏的中央，应向   （右下，左上，右上，左下）调节。（2分）

名著阅读。

　　A相了相，走到树前，把直裰脱了，用右手向下，把身倒缴着；却把左手扳住上截，把腰只一趁，将那株绿杨树带根拔起、众泼皮见了，一齐拜倒在地，只叫：“师父非是凡人，正是真罗汉！身体无千万斤气力，如何拔得起！”

　　这段文字出自古典名著《　　　　》，文段中的A的姓名是_____________；在名著中这个人物的主要性格特征是_______________；请你用简洁的语句写出关于A的另一个故事：______________________________。

It was the night of the full moon, a time which always drives Java’s young people mad with excitement.

Fireworks were lit long before the moon (1) . The big noise brought people out (2) the warm night to enjoy the interesting scene. Everywhere, there were the paper remains of (3) fireworks lying on the ground. Little boys (4) more and covered their ears as they waited (5) for the explosions.

The moon appeared above the horizon: huge, (6) ball high above the city, and the (7) filled with people, as Java began to enjoy one of the year’s greatest (8) ."the Night of the Full Moon", a festival that is especially popular (9) young people.

More and more young Javanese (10) together and walked slowly through the (11) . Joking and chatting, they moved towards the mountain (12) the city. They continued to climb (13) they reached the old temple at the (14) of the mountain.

After they were (15) the temple, they drank their water and ate their mooncakes—delicious home-made ones, (16) of dried fruit and nuts. Outside, on the mountain, young people (17) cross-legged in circles, chatting and telling each other jokes. And (18) , in their hundreds, more young people continued to make their way up the mountain to (19) the brightly shining moon.By midnight, the fireworks had stopped shooting up from the (20) city in the valley below them. But during the night, the sound continued to be heard from the distance.

15（）

A.inside 

B.near 

C.off 

D.across

DT的测试时段是如何规定的？

在细胞免疫中，效应T细胞发挥免疫作用的机制是：（）

A.与抗原结合使其失去活性

B.直接吞噬靶细胞将其分解

C.将抗原呈递给B淋巴细胞

D.激活靶细胞内的溶酶体酶