recorded their responses.She explained, "Even when the calls came from kids that are five to six days old, we could see the mothers responding more to the voices of their own babies." Hearing the voice of their own kids, the females would look towards the speaker that the sound was coming from, moving around and calling in response.

　　The scientists say that understanding how goats behave and communicate is very important. "This helps us understand just how smart these animals are," said Dr. Briefer. "Farmers might be able to change their way to raise goats considering this natural behaviour."

24. What does the underlined word "bleats" means?

　A. habits B. voices C. responses D. videos

25. During the first few days of the baby deer, the mother and the kid mainly depend on ______to

recognize each other when they are hiding in grass.

　A . voice B. touch C. videos D. smell

26. In the experiment, what does a mother goat do when hearing her kids' voice?

　A. Making voice in response. B. Jumping over and over.

　C. Hiding herself somewhere. D. Behaving just as usual.

27. The passage is mainly written for ______ to read.

　A. teachers B. writers C. farmers D. lawyers

　　　　　　　　　　　　　　　　　　　C

　　You often can choose a private setting when you browse(浏览) the internet. But be forewarned: It may not afford nearly as much privacy as you expect. That's the finding of a new study.

　　Major web browsers, such as Google's Chrome and Apple's Safari, often a private-browsing option. It's sometimes referred to as "incognito." This option lets you surf the Internet browser and saves a record into its history of each page that you visited. And what sites you visit won't affect the suggestions your browser makes the next time you're filling out an online form.

　　Many people believe----incorrectly--- that the incognito setting protects them more broadly. Most believe it even after reading a web browser's explanation of the incognito mode.

For instance, a new study had 460 people read web browsers' descriptions of private browsing. Each person read one of 13 descriptions. Then the participants answered questions