合成系统中形成的（）在温度高于（）时分解成极细的元素铁，元素铁是生成甲烷的有效催化剂

如果实数a、b满足＋(b＋5)2＝0，那么a＋b的值为　　  　

下列变化产生的热量是化学变化的结果的是 [ ]

A.手机通话时间过长，电池发热

B.电熨斗通电发热

C.液化石油气燃烧放出热量

D.太阳能热水器被阳光照射变热

下列几项中，（）不属于劳动定额的表现形式。

A、工时定额

B、产量定额

C、看管定额

D、劳动生产率

监督机构实施监督时，应当由（）以上监督人员共同进行

A.两名

B.三名

C.四名

D.五名

I used to find notes left in the collection basket of the church, beautiful notes about my homilies(讲道)and about the writer’s thoughts on the daily readings. The (1) fascinated me. But it was a long time (2) I met the author of the notes.

One Sunday morning, I was (3) that someone was waiting for me in the office, a young woman who said she (4) all the notes. When I saw her I was (5) , since I had no idea thatit was she who wrote the notes. She was sitting in a chair in the office. Her (6) was bowed and when she raised it to look at me, she could barely (7) without pain. Her face was disfigured(畸形), so smiling was very (8) for her. We (9) for a while that Sunday morning and agreed to meet for lunch later that week. As it (10) , we went to lunch several times, and we shared things about our (11) . We spoke of authors we both had (12) , and it was easy to tell that (13) are a great love of hers. She suffered from a disfigurement that cannot be made to look (14) . I know that her condition (15) her deeply. Yet there was a beauty to her that had nothing to do with (16) . She was one to be listened to, whose words came from a wounded but (17) heart. She possessed a fine tuned sense of beauty. Her only (18) in life was the loss of a friend. The truth of her life was a desire to see beyond the (19) for a glimpse of what it is that matters. She found beauty and (20) and they befriended her, and showed her what is real.

20().

A．success

B．hope

C．grace

D．help