alert怎么读xx年12月英语四级阅读真题及答案「卷一」
xx年12月英语四级阅读真题及答案「卷一」
  做真题是我们熟悉考试题型最好的方法。为了帮助大家熟悉考试题型，特意了xx年英语四级阅读真题，希望能帮到大家!
  Directions:In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item onAnswer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.
  Many men and women have long bought into the idea that there are “male” and “female” brains, believing that explains just about every difference between the sexes. A new study 26 that belief, questioning whether brains really can be distinguished by gender.
  In the study, Tel Aviv University researchers 27 for sex differences the entire human brain.
  And what did they find? Not much. Rather than offer evidence for 28 brains as “male” or “female,” research shows that brains fall into a wide range, with most people falling right in the middle.
  Daphna Joel, who led the study, said her research found that while there are some gender-based 29 , many different types of brain can’t always be distinguished by gender.
  While the “average” male and “average” female brains were 30 different, you couldn’t tell it by looking at individual brain scans. Only a small 31 of people had “all-male” or “all-female” characteristics.
  Larry Cahill, an American neuroscientist (神经科学家),said the study is an important addition to a growing body of research questioning 32 beliefs about gender and brain function. But he cautioned against concluding from this study that all brains are the same, 33 of gender.
  “There’s a mountain of evidence 34 the importance of sex influences at all levels of brain function,” he told The Seattle Times.
  If anything, he said, the study 35 that gender plays a very important role in the brain “even when we are not clear exactly how.”
  A) abnormal I) regardless
  B) applied J) searched
  C) briefly K) similarities
  D) categorizing L) slightly
  E) challenges M) suggests
  F) figure N) tastes
  G) percentage O) traditional
  H) proving
  Directions:In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2.
  Can Burglars Jam Your Wireless Security System?
  [A]Any product that promises to protect your home deserves careful examination. So it isn’t surprising that you’ll find plenty of strong opinions about the potential vulnerabilities of popular home-security systems.
  [B]The most likely type of burglary (入室盗窃) by far is the unsophisticated crime of opportunity, usually involving a broken window or some forced entry. Aording to the FBI, crimes like these aounted roughly two-thirds of all household burglaries in the US in xx.The
wide majority of the rest were illegal, unforced entries that resulted from something like a window being left open. The odds of a criminal using technical means to bypass a security system are so small that the FBI doesn’t even track those statistics.
  [C]One of the main theoretical home-security concerns is whether or not a given system is vulnerable to being blocked from working altogether. With wired setups, the fear is that a burglar (入室盗贼) might be able to shut your system down simply by cutting the right cable. With a wireless setup, you stick battery-powered sensors up around your home that keep an eye on windows, doors, motion, and more. If they detect something wrong while the system is armed, they’ll transmit a wireless alert signal to a base station that will then raise the alarm. That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming? With the right device tuned to the right frequency, what’s to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?
  [D]Jamming concerns are nothing new, and they’re not unique to security systems. Any d
evice that’s built to receive a wireless signal at a specific frequency can be overwhelmed by a stronger signal ing in on the same frequency. For parison, let’s say you wanted to “jam” a conversation between two people—all you’d need to do is yell in the listener’s ear.
  [E] Security devices are required to list the frequencies they broadcast on—that means that a potential thief can find what they need to know with minimal Googling. They will, however, need so know what system they’re looking for. If you have a sign in your yard declaring what setup you use, that’d point them in the right direction, though at that point, we’re talking about a highly targeted, semi-sophisticated attack, and not the sort forced-entry attack that makes up the majority of burglaries. It’s easier to find and acquire jamming equipment for some frequencies than it is for others.

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