TPO 8: No memoir can possibly be correct in every detail, but still, the Chevalier's memoir is pretty accurate overall, and is, by and large, a reliable historical source. Let's look at the accuracy of the three episodes mentioned in the reading.
　　TPO 9: The reading is correct in pointing out the problems associated with oil-powered cars. Yes, oil is a finite resource, and yes, burning oil harms the environment. However, the reading is way too optimistic in its assessment of hydrogen-based fuel-cell engines. Hydrogen is not the solution to these problems.
　　從本質(zhì)來講，很多問題可以從不同角度看待，就得出不同的結(jié)論。就像獨立寫作題目，一個問題，可以同意，也可以反對，絕對一邊倒的情況比較少見。遇到這種情況，可以采取折中一些的表達：比如替換completely為partly等。