阅读短文，选择正确答案。

      My name is Lily. I'm from Canada. I speak English in Canada. My friend Jenny lives in Ottawa. It's the 

capital city of Canada. I like the flag of Canada. It's beautiful. It's red and white. It has a leaf! I also like Niagara

Falls! It's a famous waterfall in Canada. Do you like Canada? Welcome to Canada in the summer holidays!

1. Where is Lily from?[ ]

A. China.              

B. Canada             

C. The U. K.

2. Where does Jenny live?

A. China.                 

B. Canada.               

C. The U. K. 

3. What language (语言) does Lily speak? [ ]

A. Chinese.       

B. French.       

C. English.

4. Does Lily like Niagara Falls?[ ]

A. Yes, she does.     

B. No, she doesn't.  

C. Yes, she doesn't. 

5. Is Niagara Falls famous?[ ]

A. Yes, it is.                  

B. No, it isn't.             

C. We don't know.

WLANs are increasingly popular because they enable cost-effective connections among people and applications that were not possible in the past. For example, WLAN-based applications can enable fine-grained management of supply （71） to improve their efficiency and reduce （72） . WLANs can also enable entirely new business processes. To cite but one example, hospitals are using WLAN-enabled point-of-care （73） to reduce errors and improve overall patient care. WLAN management solutions provide a variety of other benefits that can be substantial but difficult to measure. For example, they can protect corporate data by preventing （74）through rogue access points. They can improve overall network management by integrating with customers’ existing systems. Fortunately, it isn’t necessary to measure these benefits to justify investing in WLAN management solutions, which can quickly pay for themselves simply by minimizing time-（75） deployment and administrative chores.

71（）

A．custom

B．server

C．chains

D．chances