The former rules on lbw decisions, no-balls, wides and leg byes, while the latter assists with stumpings and run outs and may help on the question of whether a catch has carried or not if there is uncertainty.
The question of whether Europe will ever catch up is still much in the news in America.
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Currently, many studies are being done to hone in on the correct answer to the question: Is the deep-catch or scull stroke the better way to swim?
That brings up the question of interception--if we can catch autism early, should we fix it?
The burning question is whether the rest of Asia can catch just a spark of the Tokyo magic.
The question is how long for the melting to catch up.
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"There's certainly no question about his quickness, and there's certainly no question about run-after-the-catch because he's a talented guy with the ball in his hands, " said NFL Network draft analyst Mike Mayock.
It might be able to catch little ones, but whether it traps big ones is the question.
The question, of course, is whether CoreBody Reformer will catch on.
The big question: Will subtle differences between the two allow Lucentis to catch up with Macugen, which is much closer to the market?
The bigger question is how soon Mr Kirchner's relentless drive for popular approval will catch up with Argentina.
The question is whether there's time for the once-pioneering BlackBerry to catch up to Apple's trend-setting iPhone and devices running Google's Android system.
If the burger is particularly good, you might catch yourself snorting in pleasure, thoughtlessly licking a finger, or grunting an answer to a question.
The main question I asked myself when I started was: Would it be possible to catch soil and water to create land and grow crops where this floodwater passes?
The only question now is: Will Congress -- or the Justice Department -- "catch up" with Madigan's blatant violations of the provisions of the Farm Act of 1990?
And the question is, are we going to lead it or are we going to continue to try to catch up?
And the question is, how do we make sure that new companies with newer, cleaner technologies are able to catch up?
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In the lunch session at his headquarters, Zhang cheerfully reminds me of a question I asked during my last sit-down with him six years ago, about how he would catch up with Gome.
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