新航道

   新航道小編之前帶來(lái)關(guān)于GRE閱讀方面的破解內(nèi)容，這次繼續(xù)帶來(lái)章老師GRE閱讀破解系列(五)，希望對(duì)各位準(zhǔn)備備考GRE考試 的同學(xué)們有幫助，祝大家能考取一個(gè)好成績(jī)，早日被理想大學(xué)錄取。

  往期精彩內(nèi)容：

  GRE閱讀|破解GRE閱讀理解系列(四)   

  GRE閱讀 | 破解GRE閱讀理解系列（三）

  GRE閱讀 | 破解GRE閱讀理解系列（二）

  GRE閱讀 | 破解GRE閱讀理解系列（一）

  GRE閱讀第【5】講

  可以開(kāi)始“上路子”的我們

  依然是短小的篇幅，壓力不大，點(diǎn)滴積累，是我們的一貫宗旨。

  Echolocating bats emit sounds in patterns—characteristic of each species—that contain both frequency-modulated (FM) and constant-frequency (CF) signals. The broadband FM signals and the narrowband CF signals travel out to a target, reflect from it, and return to the hunting bat. In this process of transmission and reflection, the sounds are changed, and the changes in the echoes enable the bat to perceive features of the target.

  The FM signals report information about target characteristics that modify the timing and the fine frequency structure, or spectrum, of echoes—for example, the target’s size, shape, texture, surface structure, and direction in space. Because of their narrow bandwidth, CF signals portray only the target’s presence and, in the case of some bat species, its motion relative to the bat’s. Responding to changes in the CF echo’s frequency, bats of some species correct in flight for the direction and velocity of their moving prey.

  According to the passage, the information provided to the bat by CF echoes differs from that provided by FM echoes in which of the following ways?(細(xì)節(jié)信息題)

  (A) Only CF echoes alert the bat to moving targets. (徹底沒(méi)有可能這個(gè)選項(xiàng))

  (B) Only CF echoes identify the range of widely spaced targets. (徹底沒(méi)有可能這個(gè)選項(xiàng))

  (C) Only CF echoes report the target’s presence to the bat. (徹底沒(méi)有可能這個(gè)選項(xiàng))

  (D) In some species, CF echoes enable the bat to judge whether it is closing in on its target. (對(duì)于文本信息的一個(gè)細(xì)化)

  (E) In some species, CF echoes enable the bat to discriminate the size of its target and the direction in which the target is moving. (徹底沒(méi)有可能這個(gè)選項(xiàng))

  According to the passage, the configuration of the target is reported to the echolocating bat by changes in the (細(xì)節(jié)信息題)

  (A) echo spectrum of CF signals (CF只能探測(cè)presence和motion relative to the bat’s)

  (B) echo spectrum of FM signals

  (C) direction and velocity of the FM echoes (velocity并沒(méi)有)

  (D) delay between transmission and reflection of the CF signals (有CF就不對(duì)，徹底沒(méi)有可能這個(gè)選項(xiàng))

  (E) relative frequencies of the FM and the CF echoes (有CF就不對(duì))

  The author presents the information concerning bat sonar in a manner that could be best described as (態(tài)度題：整體理解全文)

  (A) argumentative

  (B) commendatory

  (C) critical

  (D) disbelieving

  (E) objective

  Which of the following best describes the organization of the passage? (結(jié)構(gòu)題的考察點(diǎn)為 判定信息的性質(zhì)：陳述事實(shí)?做出評(píng)價(jià)?詳細(xì)說(shuō)明?總結(jié)概述?這道題本身倒是相當(dāng)簡(jiǎn)單。結(jié)構(gòu)題有難度的時(shí)候，通常是長(zhǎng)篇幅的文章，你沒(méi)有耐心看，或者信息性質(zhì)發(fā)生變化的“交接點(diǎn)”很“隱蔽”。)

  (A) A fact is stated, a process is outlined, and specific details of the process are described.

  (B) A fact is stated, and examples suggesting that a distinction needs correction are considered.

  (C) A fact is stated, a theory is presented to explain that fact, and additional facts are introduced to validate the theory.

  (D) A fact is stated, and two theories are compared in light of their explanations of this fact.

  (E) A fact is stated, a process is described, and examples of still another process are illustrated in detail.

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