19．
Two men in Shanghai have been said dead from H7N9，while a woman in Anhui province is seriously ill from the virus，the National Health and Family Planning Commission said on Sunday．
This is the first time a human from H7N9has been detected．Little research has been done on this unknown bird flu，and there are no vaccines（疫苗） against the virus．
The reported deaths were of an 87-year-old man who was found ill on Feb 19and died on March 4，and a 27-year-old man who was found ill on Feb 27and died on March 10．The third person，a 35-year-old woman from Chuzhou，Anhui province，is in hospital in Nanjing，Jiangsu province．
It is still unknown how the three became ill，and experts said there is no evidence that they caught the illness from each other．There is also no evidence of anyone who stay closely with them being ill．
To be away from H7N9and stay healthy，remember the following things．
1．Go to crowded places as less as possible，especially the elderly and children．Pay attention to personal self-protection．
2．Keep the air in door fresh．Often wash your hands．Cover the nose and mouth when coughing and sneezing（打喷嚏）．Wash hands after cleaning the nose and mouth．
3．Eat clean food．Don't put raw（生的） and cooked food together．And do not eat raw or undercooked meat，eggs and other food．
4．Do sports．Take more exercise，have enough sleep and rest，so that you can get yourself stronger．
41．How do people know about H7N9？C
A．People know H7N9very well．
B．No people have heard about it．
C．People know little about it．
D．Only Chinese people know about it．
42．When did the 27-year-old man die？D
A．On February 19
B．On February 27
C．On March 4
D．On March 10
43．Where is the 35-year-old woman from？C
A．Shanghai
B．Nanjing
C．Chuzhou
D．No one knows
44．What does the underlined word"undercooked"mean in Chinese？D
A．在下面煮的
B．煮熟的
C．未煮过的
D．夹生的
45．Which is not suggested in the passage to be away from H7N9？A
A．Close the window so that birds can't fly in．
B．Don't mix raw and cooked food together．
C．Do more exercise to keep fit．
D．Don't go to crowed places．
