下列关于垄断协议的豁免情形的说法正确的是哪些( )

A．为改进技术、研究开发新产品的，经营者还应证明所达成的协议不会严重限制相关市场的竞争，并且能够使消费者分享由此产生的利益

B．为提高产品质量、降低成本、增进效率，统一产品规格、标准或者实行专业化分工的，且经营者还应证明所达成的协议不会严重限制相关市场的竞争，并且能够使消费者分享由此产生的利益

C．为提高中小经营者经营效率，增强中小经营者竞争力的，经营者还应证明所达成的协议不会严重限制相关市场的竞争，并且能够使消费者分享由此产生的利益

D．为保障对外贸易和对外经济合作中的正当利益的，且经营者还应证明所达成的协议不会严重限制相关市场的竞争，并且能够使消费者分享由此产生的利益

It was a very hot day in the middle of summer, and there were no trees along the street. Mr. Read (41) his shop at half past five, and went out into the street and began walking to the bus. He was a very (42) man. The sun shone straight down the street, and in a few minutes Mr. Read (43) very hot.

A. withB. next C. near

A small boy came out of another (44) in the street and followed Mr. Read. He stayed very (45) him all the time, and he kicked Mr. Read’s (46) several times. Mr. Read looked at him angrily each time.After the fourth time, Mr. Read stopped, turned (47) and said to the small boy, "What are you doing (48) following me like that! You’re going to hurt my feet."
"I’m (49) , but don’t stop me, please!" the small boy said. "It’s very hot today, and there isn’t (50) shade anywhere else in the street!\