Need explanations for these writing questions (CB book)

<p>Here are 9 writing questions from CB’s blue book that I didn’t understand why. Please explain them to me! Thank you! All of them are Error Identification problems. I underlined the answer and well, I don’t really understand why they’re wrong…</p>

<li>Contrasting with most other fifteenth-century rulers, Portuguese kings could count on the support of the aristocracy in any overseas ventures.</li>
<li>The new system, which uses remote cameras in the catching of speeding motorists, may undermine the police department’s authority.</li>
<li>Although the politician was initially very sensitive to be criticized by the press, he quickly became more confident about responding to reporters’ sometimes pointed questions.</li>
<li>Few issues of public policy are as likely to provoke widespread interest as that involving possible danger to the health or safety of children.</li>
<li>In the opinion of the lecturer, a background in the history of the Middle Ages is not a condition necessary in the enjoyment of medieval literature.</li>
<li>Crossing and recrossing the stream, stepping on or over slippery rocks, and following a trail that grew steeper, the hikers soon realized how challenging their day would be (it’s correct but I thought phrase “Crossing and RECROSSING sounded awkward…)</li>
<li>Though best known as a jazz vocalist, he also enjoyed gospel music, whereby he told his manager that he wanted to make a recording of his favorite gospel songs.</li>
<li>The Mount Isa mine complex is one of the most highly mechanized in the world, plus being the largest single industiral enterprise in Queensland (ok I know being is dangerous use but I chose “one of the most highly mechanized” because there is no noun in this phrase… why is this phrase considered correct?”)</li>
<li>As a student becomes familiar with both early and contemporary Native American literature, one may notice that traditional stories have influenced recent ones.</li>
</ol>

<ol>
<li>In contrast to</li>
<li>to catch</li>
<li>criticism</li>
<li>to</li>
<li>for the enjoyment of</li>
<li>also being</li>
<li>he </li>
</ol>

<p>I think those are right.</p>

<p>I agree with the above except...</p>

<ol>
<li>being criticized</li>
<li>those</li>
<li>hence?... I don't know for sure... but whereby means BY WHICH or BY WHAT so it doesn't work. That's really all you have to know.</li>
</ol>

<p>I agree with kev07wan's #4.</p>

<p>So wait.. #8's only wrong because there is no word "also"? Hmm...</p>

<h1>9.. So I can only use "one" if whole sentence is "one"? I see...</h1>

<p>Just wondering, does word "whereby" ever correct in these questions? I never actually saw it before.</p>

<p>No, for #8, you can't say 'plus being.' I can't explain it, but you can't say that. If I had to rewrite it, I'd say, "The Mount Isa mine complex is one of the most highly mechanized in the world, and is the largest single industiral enterprise in Queensland."</p>

<h1>9 - I can explain. All the clauses have to refer to the same subject. In 9, the dependent clause discusses the 'student,' while the 'independant' clause discusses 'one.'</h1>