Lychees are sweet and yummy, but they go bad very fast after picking. These days, many people worry when they see videos of wet lychees online. They think farmers put dirty water on them. But that is not true. Farmers use only clean, cold water.

Freshly (刚刚) picked lychees are warm. Cold water can cool them down quickly. This is a safe and easy way to keep them fresh for longer. There is nothing wrong with it.

1.1.People think farmers use ________ on lychees.

A dirty water

B sweet water

C hot water

D sea water

解析：选A。A细节理解题。根据文中的“They think farmers put dirty water on them.”可知，人们认为农民使用脏水。故选A。

2.2.Farmers use ________ water for lychees.

A warm

B deep

C rain

D clean

解析：选D。D细节理解题。根据文中的“Farmers use only clean, cold water.”可知，农民使用干净的水。故选D。

3.3.Cold water helps lychees ________.

A grow fast

B stay fresh

C taste sweet

D turn red

解析：选B。B细节理解题。根据文中的“This is a safe and easy way to keep them fresh for longer.”可知，冷水能让荔枝保持新鲜。故选B。

4.4.The writer tells us to buy lychees from ________.

A big farms

B street sellers

C good shops

D online videos

解析：选C。C细节理解题。根据文中的“buy lychees from good shops to stay safe”可知，作者建议大家去正规店铺买荔枝。故选C。